Balancing chemical equations

Today’s Objective: To identify the reactants
and products in a given chemical equation
AND write and balance simple chemical
equations.

What are the number(s) in

blue called?

What are the number(s) in

red called?

How many atoms of
hydrogen are in this

molecule?

How many atoms of Iron
(Fe) are in the reactants

below?

How many elements are
involved in this reaction?

Is this reaction balanced?

Is this reaction balanced?

Balancing Chemical Equations
Practice

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Ag2O → Ag + O2

Step 1 – Take Inventory of the elements and atoms on the
product and reactant side.

Step 2 – Is it balanced?

Step 3 – If unbalanced, change coefficients until it’s
balanced.

Ag – 2
O – 1

Ag – 1
O – 2

=
=

4

2

4

2

Balanced!

4

2

Balancing Chemical Equations
Practice

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KeslerScience.c

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CH4 + Cl2 → CCl4 + HCl

Step 1 – Take Inventory of the elements and
atoms on the product and reactant side.
Step 2 – Is it balanced?
Step 3 – If unbalanced, change coefficients
until it’s balanced.

C – 1 Cl – 2
H – 4

C – 1 H - 1
Cl – 4 Cl- 1

=
=

4

4

4

8

4

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Quick Action – Balance the
Equation

Step 1 – Take Inventory of the elements and
atoms on the product and reactant side.
Step 2 – Is it balanced?
Step 3 – If unbalanced, change coefficients
until it’s balanced.

NaBr + CaF2 → NaF + CaBr2

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Worksheet- 1st problem

Step 1 – Take Inventory of the elements and
atoms on the product and reactant side.
Step 2 – Is it balanced?
Step 3 – If unbalanced, change coefficients
until it’s balanced.

H2 + O2 → H2O