Chemical & Physical Changes

Front

What is a physical change?

Back

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

Front

Is evaporating water a chemical or physical change?

Back

Physical change.

Front

Is crushing a can a chemical or physical change?

Back

Physical change.

Front

Is boiling water a chemical or physical change?

Back

Physical change.

Front

What happens during a phase change?

Back

During a phase change, a substance changes from one state of matter to another (e.g., solid to liquid) without changing its chemical composition.

Front

How many elements make up NaCl?

Back

2 (Sodium and Chlorine).

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is the difference between a physical and chemical change?

Back

A physical change does not change the substance's chemical identity, while a chemical change does.