Physical and Chemical Change

Front

What is a Physical Change?

Back

A change that alters the form or appearance of a substance but does not change its chemical composition.

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 of ice.

Front

Give an example of a Chemical Change.

Back

Rusting of iron.

Front

What are some signs of a Chemical Change?

Back

Formation of gas, change in color, production of odor, temperature change.

Front

What is the difference between Physical and Chemical Changes?

Back

Physical changes do not alter the chemical composition, while chemical changes do.

Front

What happens to the ice cube when it melts?

Back

It undergoes a physical change.

Front

What indicates a Chemical Change has occurred?

Back

Milk turning sour is an indication of a chemical change.

Front

Which of the following is NOT a sign of a Chemical Change?

Back

Melting of ice.

Front

What happens to iron nails when left in the rain?

Back

They undergo a chemical change and rust.