Chemical Equations - parts & balancing

Front

What are the smaller numbers that you CANNOT change in a chemical equation, that chemistry determines?

Back

Subscript

Front

Balance this equation: _Al + _HCl --> _H2 + _AlCl3

Back

2, 6, 3, 2

Front

What is the number before a chemical formula called? Ex: 2H2 + O2 --> 2H2O

Back

Coefficient

Front

What is the correct ratio of chemicals to balance this chemical equation? __CO + __Fe2O3 --> __Fe + __CO2

Back

3, 1, 2, 3

Front

Fill in the blank to balance the chemical equation: 2KI + ____Cl2 → 2KCl + I2

Back

1

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change during a reaction.

Front

What are products in a chemical equation?

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 coefficient in a chemical equation?

Back

A number placed before a chemical formula to indicate how many molecules are involved.