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 includes processes like burning, rusting, and digestion.

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Front

Is melting butter a physical or chemical change?

Back

Physical change.

Front

What happens during the water cycle?

Back

The water cycle involves physical changes such as evaporation, condensation, and precipitation.

Front

Is food digestion a physical or chemical change?

Back

Chemical change.

Front

What occurs when Mentos are mixed with Coke?

Back

This is a chemical change that results in a rapid release of gas.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Rust forming on iron is an example of a chemical change.

Front

What are the signs of a chemical change?

Back

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