Ch.2 Chemical Reactions Amplify Test

Front

What is a chemical reaction?

Back

A process in which atoms rearrange to form new substances.

Front

True or False: Atoms can change from one type to another during a chemical reaction.

Back

False

Front

What must be true in a complete balanced chemical equation?

Back

There must be the same number of atoms of each element on the reactants and products side.

Front

Where do the oxygen atoms that form rust typically come from?

Back

They can come from the air.

Front

Can one substance change into another substance?

Back

Yes, because atoms can be rearranged.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is an example of a chemical reaction?

Back

Rusting of iron.

Front

What is the role of energy in chemical reactions?

Back

Energy is required to break bonds in reactants and is released when new bonds form in products.