Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change in which the form or appearance of matter changes, but its chemical composition remains the same.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, altering the chemical composition of the original matter.

Front

True or False: In a physical change, the makeup of matter is changed.

Back

True

Front

What is an example of a sign that a chemical reaction has occurred?

Back

Formation of a gas.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Physical change.

Front

What happens during a chemical change?

Back

During a chemical change, bonds between atoms are broken and new bonds are formed, resulting in new substances.

Front

What is rust an example of?

Back

Rust is an example of a chemical change.

Front

What are some common signs of a chemical change?

Back

Common signs include color change, temperature change, gas production, and the formation of a precipitate.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change does.

Front

Give an example of a physical change.

Back

Examples include melting ice, boiling water, or breaking a glass.