Chemical Reactions and Conservation of Mass PRACTICE

Front

The substances listed to the left of the arrow in a chemical reaction are called the _______________.

Back

reactants

Front

6CO₂ contains _______________.

Back

6 carbon atoms, 12 oxygen atoms

Front

How many atoms are in ONE molecule of O₂?

Back

2

Front

In this chemical equation, the 2 in front of the 2O₂ and the 2 in front of the 2H₂O are called the _______________.

Back

Coefficients

Front

Which of the following is not a molecule? HCl, Cl, NaCl, CO₂

Back

Cl

Front

What is the law that states that mass is neither created nor destroyed in a chemical reaction?

Back

Conservation of Mass

Front

What are the products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What do coefficients in a chemical equation represent?

Back

The number of molecules or moles of a substance.

Front

What is a molecule?

Back

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.