The process of a substance changing from a solid to a gas is called ___. A. evapora
The process by which a solid turns directly into a gas is called___. A. sublimation B. evaporation C. condensation D. dissolution 相关知识点: 试题来源: 解析 A。解析:固体直接变成气体的过程叫升华。选项 B 蒸发是液体变成气体;选项 C 冷凝是气体变成液体;选项 D 溶解是固体在液体中分散。反馈...
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
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...
Matter that has large spaces between the atoms and an indefinite volume is best described as: a. gas b. homogeneous c. liquid d. plasma e. solid Dry ice will go directly from a solid to a gas at room temperature. Going directly fr...
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 ...
1.9.5 Gas-to-Solid (GTS) Gas can be transported as a solid, with the solid being gas hydrate (Børrehaug and Gudmundsson, 1996). Natural gas hydrates (NGHs), which are essentially natural gas in a “frozen” state, form when water and natural gas combine at low temperatures and high...
The unreacted shrinking core model is applied when the reactant is converted to another solid material leaving behind the unreacted solid. The converted material, which is sometimes called “ash”, is regarded as porous and inert substance, so that the gas reactants can diffuse from the ...
Physics.a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. any such fluid or mixture of fluids. any such fluid used as an anesthetic, as nitrous oxide: Did the dentist give you gas for your extraction?
Regime (i) is called a "gas–solid reaction'', regime (ii) a "solid–solid reaction''. Investigations by SEM, XRD, TEM/SAED, and HRTEM revealed the films obtained by the gas–solid reaction to grow in almost [001] orientation and to develop a specific morphology. They are composed of...