Chemical Vs Physical Changes

Front

What is a chemical change?

Back

A chemical change is a process where a substance transforms into a different substance, resulting in the formation of new chemical properties.

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

Front

What happens to atoms during a chemical reaction?

Back

In a chemical reaction, no new atoms are created, and no atoms are destroyed; they are rearranged to form new substances.

Front

Give an example of a chemical change.

Back

Fireworks exploding is an example of a chemical change.

Front

Give an example of a physical change.

Back

When something gets wet, it is a physical change.

Front

What is the main difference between chemical and physical changes?

Back

The main difference is that a chemical change results in the formation of a new substance, while a physical change does not.

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

Front

What is an example of a reversible physical change?

Back

Melting ice and then refreezing it is an example of a reversible physical change.

Front

What is an example of an irreversible chemical change?

Back

Burning wood is an example of an irreversible chemical change.