Balancing Equations

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Tags

NGSS.MS-PS1-5

Front

What does the coefficient in a chemical equation represent?

Back

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

Tags

NGSS.MS-PS1-1

Front

How do you determine the coefficients needed to balance a chemical equation?

Back

You adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides of the equation.

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Tags

NGSS.MS-PS1-5

Front

Balance the equation: __KNO3 --> __KNO2 + __O2

Back

2, 2, 1

Tags

NGSS.MS-PS1-5

Front

Balance the equation: __Al + __HCl --> __H2 + __AlCl3

Back

2, 6, 3, 2

Tags

NGSS.MS-PS1-5

Front

Balance the equation: __Ag2O --> __Ag + __O2

Back

2, 4, 1

Tags

NGSS.MS-PS1-5

Front

Balance the equation: __Zn + __HCl --> __ZnCl2 + __H2

Back

1, 2, 1, 1

Tags

NGSS.MS-PS1-5

Front

Balance the equation: __SnO2 + __H2 --> __Sn + __H2O

Back

1, 2, 1, 2

Tags

NGSS.MS-PS1-5

Front

What is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element in the reactants and products.