Children's conceptions of changes in the state of matter: from liquid (or solid) to gas. Journal of Research in Science Teaching, 27(3): 247-266.Stavy, R., & Stachel, D. (1985a). Children’s conception of changes in the state of matter: From solid to liquid. Archives de ...
The process by which a solid changes directly into a gas without passing through the liquid state is called ___. A. evaporation B. condensation C. sublimation D. deposition 相关知识点: 试题来源: 解析 C。解析:“sublimation”是升华,固体直接变为气体不经过液态的过程是升华;“evaporation”是蒸发...
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...
Which term is used to describe when a substance changes from a liquid to a gas? A. Volatile B. Dynamic equilibrium C. Condensation D. Heat of fusion E. Vaporization For the phase change of solid to gas, what are the signs of the system's Delta H and Delta S?
美国小学一般是1~6(有的州是1~8)年级,除了常规的一到五年级,还设有学前班(kindergarten)。他们的课程极富弹性,没有界限明确的学科。01 Physical Changes 物理变化【原文】Matter can be found as a solid, liquid, or gas. A solid has a fixed size and shape. The s
What is the total number of joules released when a 5.00 gram sample of water changes from liquid to gas at 100∘ C? Latent Heat: When a material undergoes a phase change, the temperature that the material is at is constant. That is,...
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 ...
百度试题 结果1 题目20 A gas changes directly to a solid during(2)(1) fusion (3) saponification(2) deposition (4) decomposition 相关知识点: 试题来源: 解析 (2) 反馈 收藏
. - Comparison of structural models for gas-solid reactions in porous solids undergoing structural changes. Chem. Engng. Sci., 36 (1981), p. 1519- 1527.Lindner B and Simonsson D.Comparison of structural models for gas-solid reactions in porous solids undergoing structural changes. Chemical ...
when clothes are washed in cold days,they are often hung up near a fire.steam rises from the wet clothes.a basin of water will soon be covered with ice outside the door in winter.most matter has three states; solid,liquid and gas.if we raise their temperature high enough,solids can ...