Chemical vs Physical 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. Examples include burning, rusting, and cooking.

Front

What is a clue that indicates a physical change?

Back

A clue that indicates a physical change is the state of matter, such as solid, liquid, or gas.

Front

What is a clue that indicates a chemical change?

Back

A clue that indicates a chemical change is the formation of a new substance.

Front

Can physical changes be reversed?

Back

Yes, many physical changes can be reversed, such as freezing and melting water.

Front

Can chemical changes be reversed?

Back

Most chemical changes cannot be easily reversed, as they involve the formation of new substances.

Front

What happens to water vapor when it condenses?

Back

When water vapor condenses, it undergoes a physical change from gas to liquid.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is wood burning to form ash and smoke.

Front

What is the role of temperature in physical changes?

Back

Temperature can cause physical changes, such as changing the state of matter (e.g., heating ice to make water).