Chemical Reactions

Front

What is the law of conservation of mass in a chemical reaction?

Back

Total mass of the reactants must be equal to the total mass of the products.

Front

The Coefficient (3) in the Chemical Formula, 3H2O, tells you how many _____________ there are.

Back

Molecules of Water.

Front

What is a Coefficient in a chemical equation?

Back

A number in front of a compound or element that indicates how many molecules or atoms are present.

Front

Balance the following equation: __ KOH + __ HBr → __ KBr + __ H2O

Back

1, 1, 1, 1.

Front

How do you write a chemical reaction using chemical equation symbols?

Back

By using the chemical formulas of the reactants and products, along with the appropriate symbols and coefficients to balance the equation.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas to show the reactants and products.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

What does it mean to balance 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 is a subscript in a chemical formula?

Back

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