Law of conservation of mass

Front

What is a molecule?

Back

A group of atoms bonded together.

Front

If a reaction starts with 20g of reactants, how much should it produce?

Back

A total of 20g of products.

Front

What is the term for the number in front of a compound or element?

Back

Coefficient.

Front

True or False: Gases weigh nothing and do not need to be accounted for in a reaction.

Back

False.

Front

What is the coefficient in 3H₂O?

Back

3.

Front

What does the Law of Conservation of Mass state?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a reactant?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

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

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms in a molecule.

Front

How do you calculate the total mass of products in a reaction?

Back

The total mass of products equals the total mass of reactants.