Physical and Chemical 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. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the composition of the substance. Examples include rusting, burning, and baking.

Front

Which of the following is NOT an example of a physical change?

Back

Rust is NOT an example of a physical change; it is a chemical change.

Front

Is freezing juice a physical change or a chemical change?

Back

Freezing juice is a physical change.

Front

Is milk going sour a physical or chemical change?

Back

Milk going sour is a chemical change.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

What happens during a physical change?

Back

During a physical change, the form of a substance changes, but its chemical identity remains the same.

Front

What happens during a chemical change?

Back

During a chemical change, substances react to form new substances with different properties.

Front

Give an example of a physical change.

Back

An example of a physical change is crumpling a piece of paper.

Front

Give an example of a chemical change.

Back

An example of a chemical change is cookies baking in an oven.