A. evaporation B. sublimation C. condensation D. diffusion 相关知识点: 试题来源: 解析 B。固体直接变成气体的过程叫升华。选项 A 蒸发是液体变为气体;选项 C 冷凝是气体变为液体;选项 D 扩散是物质的一种混合方式。反馈 收藏
题目The process of a solid turning directly into a gas is called _. A. evaporation B. condensation C. sublimation D. distillation 相关知识点: 试题来源: 解析 C。直接从固态变成气态的过程叫做升华,sublimation 就是升华的意思。反馈 收藏
What is it called when a gas turns into a solid for a phase change? Phase Change: The conversion of the state of substance from one to another is known as the phase change. Melting, evaporating, condensation, sublimation, etc. are the examples of the phase change. ...
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When a solid is converted directly to a gas, the change of state is called ___. Phase transition Generally a solid first converts into a liquid and then into a gas. But under certain conditions of temperature and pressure, certain compounds turn directly to ...
A. Sublimation B. Evaporation C. Condensation D. Distillation 相关知识点: 试题来源: 解析 A。固体直接变为气体的过程称为升华(Sublimation)。“Evaporation”是蒸发,指液体变为气体;“Condensation”是冷凝,气体变为液体;“Distillation”是蒸馏。本题描述的是固体到气体,所以是升华,选 A。反馈...
When it is a liquid, it can run 2 your fingers. When it is a gas, you may not 3 or feel it. Water can change from a solid to liquid or to a gas 4 . This is why we always have fresh water. Now let us find out 5 it changes. The heat of the sun turns liquid water into...
So, if fire isn’t a solid, liquid, gas, or a plasma, what does that leave? It turns out fire isn’t actually matter at all. Instead, it’s our sensory experience of a chemical reaction called combustion. In a way, fire...
【小题1】根据第一段When it is a solid, it can be as hard as stone. 描述,结合常识可知当水是固体时,它被叫做冰,故选D,冰。 【小题2】根据第一段When it is a gas, you may not see or feel it. 描述,可知选C。 【小题3】根据第二段The heat of the sun turns liquid water into gas ...
solid,liquid and gas 2.1 different types of substance基本的概念：必考内容 1.Matter：Matter is defined as anything that has___(质量)and occupy ___(体积).There are three types of matter ：Solid，Liquid and Gas Definition（定义）:Solid(s):has a ___（确定的） shape and___（体积） but ...