Chemical Equations

Front

What is the Law of Conservation of Mass?

Back

Matter cannot be created or destroyed in a chemical reaction; it can only be transformed or changed.

Front

What are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

How do you determine the number of atoms in a chemical formula?

Back

Count the subscripts in the formula; if there is no subscript, it is assumed to be 1.

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How many sodium (Na) atoms are in 6NaCl?

Back

6 sodium (Na) atoms.

Front

How many atoms of carbon (C) are in C6H12O6?

Back

6 atoms of carbon (C).

Front

How many oxygen atoms are in the products of the reaction 4Fe + 3O2 → 2Fe2O3?

Back

6 oxygen atoms.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures the Law of Conservation of Mass is upheld.