Balancing Chemical Equations

Front

What is the left part of a chemical equation called?

Back

Reactants

Front

What is the coefficient of H2O in the balanced equation 2H2 + O2 --> ___H2O?

Back

2

Front

Is the following equation balanced? 4Fe + 3O2 --> 2Fe2O3

Back

YES

Front

Is the following equation balanced? Al + O2 --> 2Al2O3

Back

NO

Front

The Law of Conservation of Matter states that...

Back

The sum of the masses of reactants is equal to the sum of masses of products.

Front

What are products in a chemical equation?

Back

Substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is a coefficient in a chemical equation?

Back

A number placed before a compound to indicate how many molecules or moles of that compound are involved.

Front

What is the significance of the arrow in a chemical equation?

Back

It indicates the direction of the reaction, separating reactants from products.

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

CH4 + 2O2 --> CO2 + 2H2O