8th Grade Chap 2 Vocab and Element Practice

The change in state directly from a solid to a vapor, bypassing the liquid state at temperatures below the melting point of the substance

• vaporization

• evaporation

• sublimation

• deposition

A homogenous mixture of two or more pure substances

• solution

• compound

• element

• heterogeneous mixture

the basic particle of matter from which all other matter is constructed. It consists of protons, electrons, and usually neutrons.

• compound

• nucleus

• atom

• mixture

any process in which particles of a liquid enter the gaseous phase at its boiling point

• evaporation

• sublimation

• melting

• vaporization

any change in a substance that alters its composition.

• physical change

• chemical reaction

• phase change

• state change

a pure substance that contains only one kind of atom

• element

• compound

• solution

• mixture

a pure substance consisting of atoms of two or more elements bonded together in a fixed ratio

• element

• atom

• compound

• mixture

Relatively slow vaporization that occurs when a liquids temperature is below its boiling point but above its freezing point. It only occurs at the surface of the liquid.

• sublimation

• deposition

• vaporization

• evaporation

any change of physical state, e.g., from solid to liquid or liquid to gas vapor.

• melting

• chemical reaction

• phase change

• vaporization

Any change that does not alter the composition of a substance or its nuclear properties (e.g., melting or crushing).

• chemical reaction

• physical change

• chemical change

• melting