Front

What is a molecule?

Back

Two or more atoms bonded together.

Front

How would you describe this chemical formula: 3 H2O?

Back

3 H2O molecules.

Front

What are the starting materials in a chemical reaction called?

Back

Reactants.

Front

What are the basic building blocks for all matter?

Back

Atoms.

Front

What happens during a chemical reaction?

Back

Atoms and molecules break apart and regroup to form new products.

Front

What is a chemical reaction?

Back

A process where substances (reactants) transform into new substances (products).

Front

What are products in a chemical reaction?

Back

The substances formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is a reactant?

Back

A substance that takes part in and undergoes change during a reaction.