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 breaking glass, melting ice, or bending metal.

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 the rearrangement of atoms. Examples include rusting iron, frying an egg, or burning wood.

Front

Is breaking glass a physical or chemical change?

Back

Physical change.

Front

What happens when a new substance is produced during a reaction?

Back

It indicates a chemical change.

Front

Is bending copper wire a physical or chemical change?

Back

Physical change.

Front

What is an example of a chemical change?

Back

Frying an egg.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture in the air, forming iron oxide (rust).

Front

What is an example of a physical change?

Back

Melting ice.

Front

What are some indicators of a chemical change?

Back

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

Front

Is cooking food a physical or chemical change?

Back

Chemical change.