When a solid changes directly into a gas, it is called ___. A. evaporation B. condensation C. sublimation D. precipitation 相关知识点: 试题来源: 解析 C。sublimation 是固体直接变为气体的过程;evaporation 是液体变为气体;condensation 是气体变为液体;precipitation 是降水。反馈...
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 收藏 ...
自然科学-第一季15《物质及其变化》Matter and Its Changes 38:58 自然科学-第二季01《动物如何生长》What Animals Need to Grow 36:22 自然科学-第二季02《生命的东西VS非生物》Living Things vs Nonliving Things 37:23 自然科学-第二季03《动物的环境适应与生存》Adaptations for Survival 42:40 ...
When ice melts, it changes from a solid to a ___. A. liquid B. gas C. plasma D. solid again 相关知识点: 试题来源: 解析 A。冰融化时从固态变为液态。B 选项“gas”是气态;C 选项“plasma”是等离子体;D 选项“solid again”再次变为固态,均不符合冰融化的状态。反馈 收藏 ...
The process when a solid changes directly to gas is called [{Blank}]. State the process by which solids change directly to gases and from gases to solids. What is it called when a gas turns into a solid for a phase change? Describe a situation where a ...
When we boil water, it changes from liquid to ___. A. solid B. liquid C. gas D. none of the above 相关知识点: 试题来源: 解析 C。此题考查水的状态变化。当我们煮水时,水从液态变为气态(gas)。选项 A 是固态;选项 B 是液态,不符合变化;选项 D 以上都不对,不正确。反馈...
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 gas from the oceans, seas, rivers and lakes. The heat also turns liquid water into gas from the ...
Stavy R (1990) Children’s conception of changes in the state of matter: from liquid (or solid) to gas. J Res Sci Teach 27(3):247–266Stavy, R. (1990). Children’s conception of changes in the state of matter: From liquid (or solid) to gas. Journal of Research in Science ...
When a liquid evaporates, it changes into ___. A. a solid B. a gas C. a liquid again D. a different liquid 相关知识点: 试题来源: 解析 B。解析:液体蒸发时会变成气体,这是物态变化的知识,所以选B。A选项变成固体错误;C选项再次变成液体不符合蒸发的定义;D选项变成不同液体错误。反馈 ...
结果1 题目 When a candle burns, it changes from solid to liquid and then to gas. This is an example of ___. A. sublimation B. evaporation C. condensation D. melting 相关知识点: 试题来源: 解析 B。蜡烛燃烧时从固体变为液体再变为气体是蒸发的例子。 反馈 收藏 ...