1. What is matter made up of?
Matter is made up of tiny particles called atoms and molecules.
2. Why can we smell perfume from a distance?
Perfume particles diffuse into the air and spread out.
3. Which state of matter has a definite shape?
Solids have a definite shape.
4. Why do gases fill their container completely?
Gases have particles that move freely and spread out.
5. What happens to particles during melting?
Particles gain energy and vibrate more, breaking bonds.
6. Why does ice float on water?
Ice is less dense than liquid water.
7. What is the boiling point of water?
The boiling point of water is 100°C at 1 atm pressure.
8. Why does a liquid take the shape of its container?
Liquid particles are loosely packed and flow easily.
9. What is diffusion?
Diffusion is the movement of particles from high to low concentration.
10. Why do solids have high density?
Solids have tightly packed particles with less empty space.
11. What is the process of changing a solid to a liquid called?
The process is called melting.
12. Why does evaporation cause cooling?
High-energy particles escape, lowering the liquid’s temperature.
13. What is sublimation?
Sublimation is the change of a solid directly to a gas.
14. Why can’t we compress solids easily?
Solid particles are closely packed with little space between them.
15. What is the SI unit of temperature?
The SI unit of temperature is Kelvin.
16. Why do gases have low density?
Gas particles are far apart with large empty spaces.
17. What is the melting point of ice?
The melting point of ice is 0°C.
18. Why does water boil at a lower temperature in mountains?
Lower atmospheric pressure reduces the boiling point.
19. What is latent heat?
Latent heat is the heat absorbed or released during a state change.
20. Why do wet clothes dry faster in sunlight?
Sunlight increases the rate of evaporation.
21. What is the process of a gas changing to a liquid called?
The process is called condensation.
22. Why are liquids less rigid than solids?
Liquid particles can slide over each other.
23. What is the effect of pressure on the boiling point of a liquid?
Higher pressure increases the boiling point.
24. Why does naphthalene disappear over time?
Naphthalene undergoes sublimation.
25. What is the common property of all states of matter?
All states of matter have mass.
26. Why is oxygen a gas at room temperature?
Oxygen has weak intermolecular forces and high particle movement.
27. What is the freezing point of water?
The freezing point of water is 0°C.
28. Why does a gas exert pressure on its container?
Gas particles collide with the container walls.
29. What is evaporation?
Evaporation is the process of a liquid turning into a gas.
30. Why do solids have a fixed volume?
Solid particles are tightly bound and cannot flow.
31. What happens to particles when a liquid boils?
Particles gain energy and break free into the gas state.
32. Why is matter classified into three states?
Matter is classified based on particle arrangement and movement.
33. What is the effect of temperature on diffusion?
Higher temperature increases the rate of diffusion.
34. Why does a desert cooler work better on a hot day?
Evaporation is faster in hot and dry conditions.
35. What is the process of a liquid changing to a solid called?
The process is called freezing.
36. Why do gases diffuse faster than liquids?
Gas particles move faster and have more space between them.
37. What is the latent heat of fusion?
Latent heat of fusion is the heat required to change a solid to a liquid.
38. Why does a solid have strong intermolecular forces?
Solid particles are closely packed and strongly bonded.
39. What is the effect of humidity on evaporation?
High humidity slows down evaporation.
40. Why does camphor disappear when left open?
Camphor undergoes sublimation.
41. What is the Kelvin equivalent of 0°C?
0°C is equal to 273 K.
42. Why do liquids have a definite volume but no definite shape?
Liquid particles flow but maintain close contact.
43. What is the latent heat of vaporization?
Latent heat of vaporization is the heat required to change a liquid to a gas.
44. Why does a gas have no fixed shape or volume?
Gas particles move freely and spread out completely.
45. What happens to particles during condensation?
Particles lose energy and come closer to form a liquid.
46. Why does ice melt faster at higher temperatures?
Higher temperatures provide more energy to break bonds.
47. What is the role of intermolecular forces in solids?
Intermolecular forces hold solid particles tightly together.
48. Why does evaporation occur only at the surface of a liquid?
Only surface particles gain enough energy to escape.
49. What is the effect of surface area on evaporation?
Larger surface area increases the rate of evaporation.
50. Why does a liquid cool when it evaporates?
High-energy particles leave, reducing the liquid’s energy.
51. Why are gases highly compressible?
52. What is the physical state of water at 25°C?
Water is a liquid at 25°C.
53. Why do solids expand on heating?
Particles vibrate more and take up more space.
54. What is the process of a solid changing to a gas called?
The process is called sublimation.
55. Why does a liquid’s boiling point depend on pressure?
Pressure affects the energy needed for particles to escape.
56. What is the effect of wind speed on evaporation?
Higher wind speed increases the rate of evaporation.
57. Why do particles move faster in gases than in liquids?
Gases have weaker intermolecular forces and more space.
58. What is the temperature at which a liquid starts boiling called?
It is called the boiling point.
59. Why does a solid not diffuse easily?
Solid particles are tightly packed and cannot move freely.
60. What is the physical state of carbon dioxide at room temperature?
Carbon dioxide is a gas at room temperature.
61. Why does a liquid have a fixed volume?
Liquid particles are close together and cannot spread out.
62. What happens to particles during freezing?
Particles lose energy and form a rigid structure.
63. Why does a gas have high kinetic energy?
Gas particles move rapidly due to weak intermolecular forces.
64. What is the effect of cooling a gas?
Cooling a gas may cause it to condense into a liquid.
65. Why does a solid have a definite shape and volume?
Solid particles are fixed in position and tightly packed.
66. What is the Kelvin equivalent of 100°C?
100°C is equal to 373 K.
67. Why does evaporation occur faster in dry air?
Dry air has lower water vapor, allowing faster evaporation.
68. What is the process of ice changing to water called?
69. Why do liquids flow easily?
Liquid particles are loosely packed and can slide past each other.
70. What is the effect of heating a liquid?
Heating a liquid increases particle energy and may cause boiling.
71. Why does a gas not have a definite volume?
Gas particles spread out to fill any available space.
72. What is the temperature at which a solid starts melting called?
It is called the melting point.
73. Why does diffusion occur slower in liquids than in gases?
Liquid particles are closer together and move slower.
74. What is the physical state of oxygen at -183°C?
Oxygen is a liquid at -183°C.
75. Why does a solid have low kinetic energy?
Solid particles vibrate in fixed positions.
76. What is the effect of decreasing pressure on boiling point?
Decreasing pressure lowers the boiling point.
77. Why does a liquid evaporate faster at higher temperatures?
Higher temperatures give particles more energy to escape.
78. What is the process of water vapor changing to water called?
79. Why do solids have a crystalline structure?
Solid particles are arranged in a regular pattern.
80. What is the effect of cooling a liquid?
Cooling a liquid may cause it to freeze into a solid.
81. Why does a gas have no definite shape?
Gas particles move freely and take the shape of the container.
82. What is the temperature at which a liquid starts freezing called?
It is called the freezing point.
83. Why does diffusion occur in gases?
Gas particles move randomly and mix with other particles.
84. What is the physical state of nitrogen at -195°C?
Nitrogen is a liquid at -195°C.
85. Why does a liquid have moderate kinetic energy?
Liquid particles move more than solids but less than gases.
86. What is the effect of increasing temperature on a solid?
Increasing temperature may cause a solid to melt.
87. Why does a gas condense at low temperatures?
Low temperatures reduce particle energy, forming a liquid.
88. What is the process of dry ice changing to gas called?
89. Why do liquids have weaker intermolecular forces than solids?
Liquid particles are less tightly bonded than solids.
90. What is the effect of heating a gas?
Heating a gas increases particle speed and pressure.
91. Why does a solid not flow?
Solid particles are fixed and cannot move past each other.
92. What is the Kelvin equivalent of -273°C?
-273°C is equal to 0 K.
93. Why does evaporation depend on temperature?
Higher temperature gives particles more energy to evaporate.
94. What is the process of water changing to steam called?
The process is called vaporization.
95. Why do gases have high compressibility?
Gas particles have large spaces that can be reduced.
96. What is the effect of cooling a solid?
Cooling a solid reduces particle vibration.
97. Why does a liquid have a definite volume but not shape?
Liquid particles stay close but flow to fit the container.
98. What is the temperature at which a gas starts condensing called?
It is called the condensation point.
99. Why does diffusion occur in liquids?
Liquid particles move and mix with other particles.
100. What is the physical state of water at 100°C?
Water is a gas at 100°C at 1 atm pressure.
101. Why does a gas have high kinetic energy?
Gas particles move rapidly with minimal attraction.
102. What is the effect of increasing pressure on a gas?
Increasing pressure reduces the volume of a gas.
103. Why does a solid melt at a specific temperature?
The melting point depends on the strength of intermolecular forces.
104. What is the process of steam changing to water called?
105. Why do liquids evaporate at any temperature?
Some surface particles gain enough energy to escape.
106. What is the effect of heating a solid?
Heating a solid increases particle vibration and may cause melting.
107. Why does a gas have low intermolecular forces?
Gas particles are far apart and weakly attracted.
108. What is the physical state of ice at -10°C?
Ice is a solid at -10°C.
109. Why does a liquid boil at a specific temperature?
The boiling point depends on pressure and intermolecular forces.
110. What is the effect of decreasing temperature on a liquid?
Decreasing temperature may cause a liquid to freeze.
111. Why does a solid have a high melting point?
Strong intermolecular forces require more energy to break.
112. What is the process of a gas changing to a solid called?
The process is called deposition.
113. Why do gases mix easily?
Gas particles move freely and have large spaces between them.
114. What is the Kelvin equivalent of 25°C?
25°C is equal to 298 K.
115. Why does a liquid have a lower density than a solid?
Liquid particles are less tightly packed than solids.
116. What is the effect of increasing surface area on evaporation?
Increasing surface area speeds up evaporation.
117. Why does a gas expand on heating?
Gas particles gain energy and move farther apart.
118. What is the physical state of water at 0°C?
Water can be solid or liquid at 0°C.
119. Why does a solid have a fixed arrangement of particles?
Strong intermolecular forces hold particles in place.
120. What is the effect of humidity on drying clothes?
High humidity slows down the drying of clothes.
121. Why does a liquid form droplets?
Intermolecular forces pull liquid particles together.
122. What is the process of a solid changing to a liquid called?
123. Why do gases have no fixed volume?
Gas particles spread out to fill the container.
124. What is the effect of cooling a gas to its condensation point?
Cooling a gas to its condensation point forms a liquid.
125. Why does a solid have a high boiling point?
Strong intermolecular forces require more energy to overcome.
126. What is the physical state of oxygen at -200°C?
Oxygen is a solid at -200°C.
127. Why does a liquid have a higher boiling point than a gas?
Liquid particles are closer and have stronger attractions.
128. What is the effect of wind on drying wet surfaces?
Wind increases the rate of evaporation, drying surfaces faster.
129. Why does a gas condense under pressure?
Pressure brings gas particles closer, forming a liquid.
130. What is the process of water freezing into ice called?
131. Why do solids have a definite volume?
Solid particles are tightly packed and cannot spread.
132. What is the effect of heating a liquid to its boiling point?
The liquid turns into a gas at its boiling point.
133. Why does a gas have a low boiling point?
Weak intermolecular forces require less energy to overcome.
134. What is the physical state of nitrogen at -200°C?
Nitrogen is a solid at -200°C.
135. Why does a liquid evaporate slower in a closed container?
Vapor particles cannot escape, increasing humidity.
136. What is the effect of temperature on particle movement?
Higher temperature increases particle movement.
137. Why does a solid not take the shape of its container?
Solid particles are fixed and cannot flow.
138. What is the process of a liquid changing to a gas below its boiling point called?
The process is called evaporation.
139. Why do gases have high diffusion rates?
Gas particles move quickly and have large spaces between them.
140. What is the Kelvin equivalent of 50°C?
50°C is equal to 323 K.
141. Why does a liquid have a lower melting point than a solid?
Liquids are already in a less ordered state than solids.
142. What is the effect of cooling a liquid below its freezing point?
Cooling below the freezing point turns a liquid into a solid.
143. Why does a gas have a high rate of expansion?
Gas particles move freely and spread out easily.
144. What is the physical state of water at -5°C?
Water is a solid at -5°C.
145. Why does a solid have strong bonds between particles?
Strong intermolecular forces keep particles closely packed.
146. What is the effect of pressure on the melting point of a solid?
Higher pressure can lower the melting point for some solids.
147. Why does a liquid evaporate faster in an open container?
Vapor particles can escape freely into the air.
148. What is the process of a gas changing to a solid called?
149. Why do liquids have a definite volume?
Liquid particles are close together and resist compression.
150. What is the effect of heating a gas?
Heating a gas increases its volume or pressure.
151. Why does a solid have a low rate of diffusion?
Solid particles are fixed and cannot move freely.
152. What is the Kelvin equivalent of -50°C?
-50°C is equal to 223 K.
153. Why does a gas have a low density compared to a liquid?
Gas particles are much farther apart than liquid particles.
154. What is the effect of increasing temperature on evaporation?
Increasing temperature speeds up evaporation.
155. Why does a liquid have a higher density than a gas?
Liquid particles are closer together than gas particles.
156. What is the physical state of carbon dioxide at -78°C?
Carbon dioxide is a solid at -78°C.
157. Why does a solid have a high density?
Solid particles are tightly packed with minimal space.
158. What is the effect of cooling a gas below its condensation point?
Cooling below the condensation point forms a liquid.
159. Why does a gas have a high rate of diffusion?
Gas particles move quickly and spread out easily.
160. What is the process of a solid melting into a liquid called?
161. Why do liquids have a lower boiling point than solids?
Liquids have weaker intermolecular forces than solids.
162. What is the effect of increasing humidity on evaporation?
Increasing humidity slows down evaporation.
163. Why does a gas have no definite shape or volume?
Gas particles move freely and fill any space.
164. What is the physical state of water at 50°C?
Water is a liquid at 50°C.
165. Why does a solid have a low compressibility?
Solid particles are closely packed with little space to compress.
166. What is the effect of heating a liquid?
167. Why does a gas have a high kinetic energy?
Gas particles move rapidly with weak attractions.
168. What is the process of a liquid freezing into a solid called?
169. Why do liquids have a moderate density?
Liquid particles are closer than gases but less than solids.
170. What is the effect of decreasing pressure on a gas?
Decreasing pressure increases the volume of a gas.
171. Why does a solid have a high melting point?
172. What is the physical state of oxygen at 25°C?
Oxygen is a gas at 25°C.
173. Why does a liquid evaporate faster at low humidity?
Low humidity allows vapor particles to escape easily.
174. What is the effect of cooling a solid?
175. Why does a gas have a low melting point?
176. What is the process of a gas condensing into a liquid called?
177. Why do solids have a definite shape?
Solid particles are fixed in a rigid structure.
178. What is the effect of increasing temperature on a gas?
Increasing temperature increases gas volume or pressure.
179. Why does a liquid have a moderate compressibility?
Liquid particles are close but can be slightly compressed.
180. What is the physical state of nitrogen at 25°C?
Nitrogen is a gas at 25°C.
181. Why does a solid have a low rate of expansion?
Solid particles are tightly bound and resist movement.
182. What is the effect of heating a solid to its melting point?
The solid turns into a liquid at its melting point.
183. Why does a gas have a high rate of compressibility?
184. What is the process of a solid sublimating into a gas called?
185. Why do liquids have a lower density than solids?
186. What is the effect of cooling a liquid to its freezing point?
Cooling to the freezing point turns a liquid into a solid.
187. Why does a gas have a low condensation point?
Weak intermolecular forces allow easy condensation.
188. What is the physical state of water at 150°C?
Water is a gas at 150°C.
189. Why does a solid have a high intermolecular force?
Solid particles are closely packed and strongly attracted.
190. What is the effect of increasing wind speed on evaporation?
Increasing wind speed speeds up evaporation.
191. Why does a liquid have a higher kinetic energy than a solid?
Liquid particles move more freely than solid particles.
192. What is the process of a gas depositing into a solid called?
193. Why do gases have a low density?
194. What is the effect of heating a liquid to its boiling point?
195. Why does a solid have a low kinetic energy?
196. What is the physical state of ice at 5°C?
Ice melts into a liquid at 5°C.
197. Why does a liquid have a lower boiling point than a solid?
198. What is the effect of decreasing temperature on a gas?
Decreasing temperature may cause a gas to condense.
199. Why does a gas have a high rate of expansion?
200. What is the process of a liquid evaporating into a gas called?
201. Why do solids have a high density?
202. What is the effect of cooling a gas to its condensation point?
Cooling to the condensation point forms a liquid.
203. Why does a liquid have a moderate intermolecular force?
Liquid particles are loosely bound compared to solids.
204. What is the physical state of carbon dioxide at 25°C?
Carbon dioxide is a gas at 25°C.
205. Why does a solid have a definite volume?
206. What is the effect of heating a solid?
207. Why does a gas have a low boiling point?
208. What is the process of a liquid freezing into a solid called?
209. Why do liquids have a definite volume?
Liquid particles are close together and resist spreading.
210. What is the effect of increasing pressure on a liquid?
Increasing pressure may raise the boiling point.
211. Why does a solid have a high melting point?
212. What is the physical state of oxygen at -190°C?
Oxygen is a liquid at -190°C.
213. Why does a liquid evaporate faster in sunlight?
Sunlight increases the energy of surface particles.
214. What is the effect of cooling a liquid?
Cooling a liquid reduces particle energy and may cause freezing.
215. Why does a gas have a high compressibility?
216. What is the process of a solid melting into a liquid called?
217. Why do solids have a definite shape?
218. What is the effect of heating a gas?
219. Why does a liquid have a moderate density?
220. What is the physical state of nitrogen at -190°C?
Nitrogen is a liquid at -190°C.
221. Why does a solid have a low rate of diffusion?
222. What is the effect of increasing temperature on a liquid?
Increasing temperature may cause a liquid to boil.
223. Why does a gas have a low density?
224. What is the process of a gas condensing into a liquid called?
225. Why do liquids have a lower density than solids?
226. What is the effect of cooling a solid?
227. Why does a solid have a high intermolecular force?
228. What is the physical state of water at 75°C?
Water is a liquid at 75°C.
229. Why does a liquid have a higher kinetic energy than a solid?
230. What is the effect of increasing humidity on drying?
Increasing humidity slows down drying.
231. Why does a gas have a high rate of diffusion?
232. What is the process of a solid sublimating into a gas called?
233. Why do solids have a high density?
234. What is the effect of heating a liquid?
235. Why does a gas have a low melting point?
236. What is the physical state of ice at -20°C?
Ice is a solid at -20°C.
237. Why does a liquid have a moderate compressibility?
238. What is the effect of decreasing pressure on a liquid?
239. Why does a solid have a low rate of expansion?
240. What is the process of a liquid evaporating into a gas called?
241. Why do gases have a low boiling point?
Weak intermolecular forces allow easy vaporization.
242. What is the effect of cooling a gas?
243. Why does a liquid have a definite volume?
244. What is the physical state of carbon dioxide at -50°C?
Carbon dioxide is a solid at -50°C.
245. Why does a solid have a high melting point?
246. What is the effect of increasing temperature on a solid?
247. Why does a gas have a high kinetic energy?
248. What is the process of a gas depositing into a solid called?
249. Why do liquids have a moderate intermolecular force?
250. What is the effect of heating a solid to its melting point?
251. Why does a gas have a low density?
252. What is the physical state of water at 120°C?
Water is a gas at 120°C.
253. Why does a solid have a definite shape?
254. What is the effect of cooling a liquid to its freezing point?
255. Why does a liquid have a higher density than a gas?
256. What is the process of a solid melting into a liquid called?
257. Why do gases have a high compressibility?
258. What is the effect of increasing pressure on a gas?
259. Why does a solid have a low kinetic energy?
260. What is the physical state of oxygen at -220°C?
Oxygen is a solid at -220°C.
261. Why does a liquid have a lower boiling point than a solid?
262. What is the effect of decreasing temperature on a liquid?
263. Why does a gas have a high rate of expansion?
264. What is the process of a liquid freezing into a solid called?
265. Why do solids have a high density?
266. What is the effect of heating a gas?
267. Why does a liquid have a moderate density?
268. What is the physical state of nitrogen at -210°C?
Nitrogen is a solid at -210°C.
269. Why does a solid have a high intermolecular force?
270. What is the effect of cooling a gas to its condensation point?
271. Why does a gas have a low boiling point?
272. What is the process of a gas condensing into a liquid called?
273. Why do liquids have a definite volume?
274. What is the effect of increasing temperature on a gas?
275. Why does a solid have a low rate of diffusion?
276. What is the physical state of water at 90°C?
Water is a liquid at 90°C.
277. Why does a liquid have a higher kinetic energy than a solid?
278. What is the effect of heating a liquid to its boiling point?
279. Why does a gas have a high compressibility?
280. What is the process of a solid sublimating into a gas called?
281. Why do solids have a definite shape?
282. What is the effect of cooling a solid?
283. Why does a liquid have a moderate intermolecular force?
284. What is the physical state of carbon dioxide at -100°C?
Carbon dioxide is a solid at -100°C.
285. Why does a solid have a high melting point?
286. What is the effect of increasing pressure on a liquid?
287. Why does a gas have a low density?
288. What is the process of a liquid evaporating into a gas called?
289. Why do liquids have a lower density than solids?
290. What is the effect of heating a solid to its melting point?
291. Why does a gas have a high rate of diffusion?
292. What is the physical state of water at -10°C?
Water is a solid at -10°C.
293. Why does a solid have a low kinetic energy?
294. What is the effect of cooling a liquid to its freezing point?
295. Why does a liquid have a higher density than a gas?
296. What is the process of a gas depositing into a solid called?
297. Why do gases have a low boiling point?
298. What is the effect of increasing temperature on a liquid?
299. Why does a solid have a high density?
300. What is the physical state of oxygen at -200°C?
301. Why does a liquid have a moderate compressibility?
302. What is the effect of decreasing pressure on a gas?
303. Why does a gas have a high kinetic energy?
304. What is the process of a solid melting into a liquid called?
305. Why do solids have a definite volume?
306. What is the effect of heating a gas?
307. Why does a liquid have a lower boiling point than a solid?
308. What is the physical state of nitrogen at -200°C?
309. Why does a solid have a high intermolecular force?
310. What is the effect of cooling a gas?
311. Why does a gas have a low melting point?
312. What is the process of a liquid freezing into a solid called?
313. Why do liquids have a definite volume?
314. What is the effect of increasing temperature on a solid?
315. Why does a solid have a low rate of diffusion?
316. What is the physical state of water at 25°C?
317. Why does a liquid have a higher kinetic energy than a solid?
318. What is the effect of heating a liquid?
319. Why does a gas have a high compressibility?
320. What is the process of a gas condensing into a liquid called?
321. Why do solids have a definite shape?
322. What is the effect of cooling a solid?
323. Why does a liquid have a moderate density?
324. What is the physical state of carbon dioxide at -90°C?
Carbon dioxide is a solid at -90°C.
325. Why does a solid have a high melting point?
326. What is the effect of increasing pressure on a gas?
327. Why does a gas have a low density?
328. What is the process of a solid sublimating into a gas called?
329. Why do liquids have a lower density than solids?
330. What is the effect of cooling a liquid to its freezing point?
331. Why does a gas have a high rate of diffusion?
332. What is the physical state of water at -5°C?
333. Why does a solid have a low kinetic energy?
334. What is the effect of heating a solid to its melting point?
335. Why does a liquid have a higher density than a gas?
336. What is the process of a gas depositing into a solid called?
337. Why do gases have a low boiling point?
338. What is the effect of increasing temperature on a liquid?
339. Why does a solid have a high density?
340. What is the physical state of oxygen at -183°C?
341. Why does a liquid have a moderate compressibility?
342. What is the effect of decreasing pressure on a liquid?
343. Why does a gas have a high kinetic energy?
344. What is the process of a solid melting into a liquid called?
345. Why do solids have a definite volume?
346. What is the effect of heating a gas?
347. Why does a liquid have a lower boiling point than a solid?
348. What is the physical state of nitrogen at -195°C?
349. Why does a solid have a high intermolecular force?
350. What is the effect of cooling a gas to its condensation point?
351. Why does a gas have a low melting point?
352. What is the process of a liquid freezing into a solid called?
353. Why do liquids have a definite volume?
354. What is the effect of increasing temperature on a solid?
355. Why does a solid have a low rate of diffusion?
356. What is the physical state of water at 100°C?
357. Why does a liquid have a higher kinetic energy than a solid?
358. What is the effect of heating a liquid to its boiling point?
359. Why does a gas have a high compressibility?
360. What is the process of a gas condensing into a liquid called?
361. Why do solids have a definite shape?
362. What is the effect of cooling a solid?
363. Why does a liquid have a moderate density?
364. What is the physical state of carbon dioxide at -78°C?
365. Why does a solid have a high melting point?
366. What is the effect of increasing pressure on a gas?
367. Why does a gas have a low density?
368. What is the process of a solid sublimating into a gas called?
369. Why do liquids have a lower density than solids?
370. What is the effect of cooling a liquid to its freezing point?
371. Why does a gas have a high rate of diffusion?
372. What is the physical state of water at 0°C?
373. Why does a solid have a low kinetic energy?
374. What is the effect of heating a solid to its melting point?
375. Why does a liquid have a higher density than a gas?
376. What is the process of a gas depositing into a solid called?
377. Why do gases have a low boiling point?
378. What is the effect of increasing temperature on a liquid?
379. Why does a solid have a high density?
380. What is the physical state of oxygen at -183°C?
381. Why does a liquid have a moderate compressibility?
382. What is the effect of decreasing pressure on a liquid?
383. Why does a gas have a high kinetic energy?
384. What is the process of a solid melting into a liquid called?
385. Why do solids have a definite volume?
386. What is the effect of heating a gas?
387. Why does a liquid have a lower boiling point than a solid?
388. What is the physical state of nitrogen at -195°C?
389. Why does a solid have a high intermolecular force?
390. What is the effect of cooling a gas to its condensation point?
391. Why does a gas have a low melting point?
392. What is the process of a liquid freezing into a solid called?
393. Why do liquids have a definite volume?
394. What is the effect of increasing temperature on a solid?
395. Why does a solid have a low rate of diffusion?
396. What is the physical state of water at 50°C?
397. Why does a liquid have a higher kinetic energy than a solid?
398. What is the effect of heating a liquid to its boiling point?
399. Why does a gas have a high compressibility?
400. What is the process of a gas condensing into a liquid called?
401. Why do solids have a definite shape?
402. What is the effect of cooling a solid?
403. Why does a liquid have a moderate density?
404. What is the physical state of carbon dioxide at -78°C?
405. Why does a solid have a high melting point?
406. What is the effect of increasing pressure on a gas?
407. Why does a gas have a low density?
408. What is the process of a solid sublimating into a gas called?
409. Why do liquids have a lower density than solids?
410. What is the effect of cooling a liquid to its freezing point?
411. Why does a gas have a high rate of diffusion?
412. What is the physical state of water at -10°C?
413. Why does a solid have a low kinetic energy?
414. What is the effect of heating a solid to its melting point?
415. Why does a liquid have a higher density than a gas?
416. What is the process of a gas depositing into a solid called?
417. Why do gases have a low boiling point?
418. What is the effect of increasing temperature on a liquid?
419. Why does a solid have a high density?
420. What is the physical state of oxygen at -183°C?
421. Why does a liquid have a moderate compressibility?
422. What is the effect of decreasing pressure on a liquid?
423. Why does a gas have a high kinetic energy?
424. What is the process of a solid melting into a liquid called?
425. Why do solids have a definite volume?
426. What is the effect of heating a gas?
427. Why does a liquid have a lower boiling point than a solid?
428. What is the physical state of nitrogen at -195°C?
429. Why does a solid have a high intermolecular force?
430. What is the effect of cooling a gas to its condensation point?
431. Why does a gas have a low melting point?
432. What is the process of a liquid freezing into a solid called?
433. Why do liquids have a definite volume?
434. What is the effect of increasing temperature on a solid?
435. Why does a solid have a low rate of diffusion?
436. What is the physical state of water at 75°C?
437. Why does a liquid have a higher kinetic energy than a solid?
438. What is the effect of heating a liquid to its boiling point?
439. Why does a gas have a high compressibility?
440. What is the process of a gas condensing into a liquid called?
441. Why do solids have a definite shape?
442. What is the effect of cooling a solid?
443. Why does a liquid have a moderate density?
444. What is the physical state of carbon dioxide at -78°C?
445. Why does a solid have a high melting point?
446. What is the effect of increasing pressure on a gas?
447. Why does a gas have a low density?
448. What is the process of a solid sublimating into a gas called?
449. Why do liquids have a lower density than solids?
450. What is the effect of cooling a liquid to its freezing point?
451. Why does a gas have a high rate of diffusion?
452. What is the physical state of water at -5°C?
453. Why does a solid have a low kinetic energy?
454. What is the effect of heating a solid to its melting point?
455. Why does a liquid have a higher density than a gas?
456. What is the process of a gas depositing into a solid called?
457. Why do gases have a low boiling point?
458. What is the effect of increasing temperature on a liquid?
459. Why does a solid have a high density?
460. What is the physical state of oxygen at -183°C?
461. Why does a liquid have a moderate compressibility?
462. What is the effect of decreasing pressure on a liquid?
463. Why does a gas have a high kinetic energy?
464. What is the process of a solid melting into a liquid called?
465. Why do solids have a definite volume?
466. What is the effect of heating a gas?
467. Why does a liquid have a lower boiling point than a solid?
468. What is the physical state of nitrogen at -195°C?
469. Why does a solid have a high intermolecular force?
470. What is the effect of cooling a gas to its condensation point?
471. Why does a gas have a low melting point?
472. What is the process of a liquid freezing into a solid called?
473. Why do liquids have a definite volume?
474. What is the effect of increasing temperature on a solid?
475. Why does a solid have a low rate of diffusion?
476. What is the physical state of water at 25°C?
477. Why does a liquid have a higher kinetic energy than a solid?
478. What is the effect of heating a liquid to its boiling point?
479. Why does a gas have a high compressibility?
480. What is the process of a gas condensing into a liquid called?
481. Why do solids have a definite shape?
482. What is the effect of cooling a solid?
483. Why does a liquid have a moderate density?
484. What is the physical state of carbon dioxide at -78°C?
485. Why does a solid have a high melting point?
486. What is the effect of increasing pressure on a gas?
487. Why does a gas have a low density?
488. What is the process of a solid sublimating into a gas called?
489. Why do liquids have a lower density than solids?
490. What is the effect of cooling a liquid to its freezing point?
491. Why does a gas have a high rate of diffusion?
492. What is the physical state of water at -10°C?
493. Why does a solid have a low kinetic energy?
494. What is the effect of heating a solid to its melting point?
495. Why does a liquid have a higher density than a gas?
496. What is the process of a gas depositing into a solid called?
497. Why do gases have a low boiling point?
498. What is the effect of increasing temperature on a liquid?
499. Why does a solid have a high density?
500. What is the physical state of oxygen at -183°C?
501. Why does a liquid have a moderate compressibility?
502. What is the effect of decreasing pressure on a liquid?
503. Why does a gas have a high kinetic energy?
504. What is the process of a solid melting into a liquid called?
505. Why do solids have a definite volume?
506. What is the effect of heating a gas?
507. Why does a liquid have a lower boiling point than a solid?
508. What is the physical state of nitrogen at -195°C?
509. Why does a solid have a high intermolecular force?
510. What is the effect of cooling a gas to its condensation point?
511. Why does a gas have a low melting point?
512. What is the process of a liquid freezing into a solid called?
513. Why do liquids have a definite volume?
514. What is the effect of increasing temperature on a solid?
515. Why does a solid have a low rate of diffusion?
516. What is the physical state of water at 50°C?
517. Why does a liquid have a higher kinetic energy than a solid?
518. What is the effect of heating a liquid to its boiling point?
519. Why does a gas have a high compressibility?
520. What is the process of a gas condensing into a liquid called?
521. Why do solids have a definite shape?
522. What is the effect of cooling a solid?
523. Why does a liquid have a moderate density?
524. What is the physical state of carbon dioxide at -78°C?
525. Why does a solid have a high melting point?
526. What is the effect of increasing pressure on a gas?
527. Why does a gas have a low density?
528. What is the process of a solid sublimating into a gas called?
529. Why do liquids have a lower density than solids?
530. What is the effect of cooling a liquid to its freezing point?
531. Why does a gas have a high rate of diffusion?
532. What is the physical state of water at -10°C?
533. Why does a solid have a low kinetic energy?
534. What is the effect of heating a solid to its melting point?
535. Why does a liquid have a higher density than a gas?
536. What is the process of a gas depositing into a solid called?
537. Why do gases have a low boiling point?
538. What is the effect of increasing temperature on a liquid?
539. Why does a solid have a high density?
540. What is the physical state of oxygen at -183°C?
Ox
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