Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change changes the physical properties of an object, but does not create a new substance.

Front

What is a chemical change?

Back

A chemical change creates a new substance and cannot be undone.

Front

Is melting ice a physical or chemical change?

Back

Physical change.

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change.

Front

What happens to the substance in a physical change?

Back

The substance remains the same; only its form or appearance changes.

Front

What happens to the substance in a chemical change?

Back

The substance transforms into a different substance with new properties.

Front

Can a physical change be reversed?

Back

Yes, most physical changes can be reversed.

Front

Can a chemical change be reversed?

Back

No, chemical changes usually cannot be reversed.

Front

Give an example of a physical change.

Back

Examples include freezing water, cutting paper, or breaking glass.