Physical/Chemical Properties, Changes and Reactions

Front

Is sharpening a pencil a physical or chemical change?

Back

Physical

Front

Is the formation of the grand canyon a physical or chemical change?

Back

Physical

Front

A chemical change is different than a physical change because in a chemical change...

Back

A new substance is formed and in a physical, no new substance is formed.

Front

What is the formula for density?

Back

density = mass / volume

Front

Which of the following is not a clue that a chemical reaction has taken place?

Back

Changing size

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

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

Front

Give an example of a physical change.

Back

Melting ice.

Front

Give an example of a chemical change.

Back

Burning wood.

Front

What are some signs of a chemical reaction?

Back

Color change, gas production, temperature change, formation of a precipitate.