8th Science EOG Review - Chemistry

Front

What is an element?

Back

A pure substance that consists of only one kind of atom.

Front

What is a compound?

Back

A pure substance that is composed of two or more different elements chemically combined.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is solubility?

Back

The ability of a substance to dissolve in a solvent, such as water.

Front

What is buoyancy?

Back

The ability of an object to float in a fluid.

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of atoms of each element on both sides.

Front

What is an example of a physical change?

Back

Freezing water.

Front

What is an example of a chemical change?

Back

Burning coal.