2425 IA1 Practice Test

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that can be separated by physical processes.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together and cannot be separated by physical means.

Front

What happens to particles in a liquid when heated?

Back

They move faster and spread apart.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What are atoms?

Back

Atoms are the basic building blocks of matter, consisting of protons, neutrons, and electrons.

Front

What are molecules?

Back

Molecules are groups of two or more atoms bonded together.

Front

What is an example of a physical change?

Back

Cutting a piece of paper is a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is a chemical change.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent.