Balancing Chemical Equations

Front

What is the little number after an element in a chemical equation called?

Back

Subscript

Front

What are the substances called that are present before a chemical reaction?

Back

Reactants

Front

What are the substances called that are produced after a chemical reaction?

Back

Products

Front

What is the purpose of balancing a chemical equation?

Back

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

Front

What does a coefficient in a chemical equation represent?

Back

The number of molecules or moles of a substance.

Front

How many elements are in the compound C6H12O6?

Back

3 (Carbon, Hydrogen, Oxygen)

Front

What is the balanced equation for the reaction of nitrogen and oxygen to form nitric oxide?

Back

2N2 + O2 -> 4NO

Front

What is the term for the arrow in a chemical equation that indicates the direction of the reaction?

Back

Yield

Front

What is the balanced equation for the combustion of propane (C3H8)?

Back

C3H8 + 5O2 -> 3CO2 + 4H2O

Front

What is the difference between a subscript and a coefficient in a chemical formula?

Back

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