Physical and Chemical Properties and 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 rusting, burning, and digestion.

Front

Is rusting a physical or chemical change?

Back

Rusting is a chemical change.

Front

What is evidence of a chemical change?

Back

Evidence of a chemical change includes the formation of a new substance, color change, gas production, and temperature change.

Front

Does a physical change produce a new substance?

Back

No, a physical change does not produce a new substance.

Front

What happens during a chemical change?

Back

During a chemical change, the atoms in the reactants rearrange to form new substances with different properties.

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 burning wood.

Front

What is the difference between physical properties and chemical properties?

Back

Physical properties can be observed without changing the substance's identity, while chemical properties can only be observed during a chemical reaction.

Front

What is a clue that a chemical change has occurred?

Back

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