Chemical reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) undergo a transformation to form new substances (products) with different properties.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

True or False: Physical changes do not change a substance into a different substance.

Back

True

Front

True or False: Physical properties of substances require a change of identity to observe or measure.

Back

False

Front

What happens to particles during a chemical reaction?

Back

They rearrange to form new substances.

Front

True or False: Products of a chemical reaction have different properties than the original substances.

Back

True

Front

What is evidence that a chemical reaction has occurred?

Back

A change in properties of the substances involved.

Front

What are reactants?

Back

The starting substances in a chemical reaction that undergo change.

Front

What are products?

Back

The new substances formed as a result of a chemical reaction.

Front

Give an example of a physical change.

Back

Melting ice into water.