9. Balancing Equations

Front

What does (aq) mean after a formula?

Back

dissolved in water

Front

What is the Law of Conservation of Mass?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

When an element exists in pairs, what is it referred to as?

Back

diatomic

Front

How many O's are in Al₂(SO₄)₃?

Back

12

Front

What do the red numbers in a chemical equation represent?

Back

coefficients

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate the number of molecules.

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the difference between a reactant and a product?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.