Physical and Chemical Changes in Matter

Front

What are the new substances created during a chemical reaction called?

Back

Products

Front

What charge do neutrons have?

Back

No charge

Front

What is the chemical formula for hydrochloric acid?

Back

HCl

Front

What type of mixture is well-mixed and has particles so small they cannot be seen?

Back

Homogeneous mixture

Front

What scale is used to determine the acidity of a solution?

Back

pH scale

Front

What is the term for a change that results in the formation of new chemical substances?

Back

Chemical change

Front

What is the term for a change that does not alter the chemical composition of a substance?

Back

Physical change

Front

What is the process called when a solid turns directly into a gas?

Back

Sublimation

Front

What is the term for a mixture that has a uniform composition throughout?

Back

Homogeneous mixture

Front

What is the term for a mixture that consists of visibly different substances or phases?

Back

Heterogeneous mixture