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 cutting.

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 rusting, burning, and digestion.

Front

Is breaking a bone a physical or chemical change?

Back

Physical change.

Front

What happens to a bike that is left outside in the rain?

Back

It gets rusty, which is a chemical change.

Front

What does color change indicate in a substance?

Back

Color change often indicates a chemical change has occurred.

Front

Is cutting hair a physical or chemical change?

Back

Physical change.

Front

What happens when ice cream melts?

Back

It undergoes a physical change.

Front

Can a physical change be reversed?

Back

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

Front

Can a chemical change be reversed?

Back

Most chemical changes are not easily reversible.

Front

What is an example of a physical change?

Back

Examples include melting ice, dissolving sugar in water, and chopping vegetables.