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?

Open Ended

What are the numbers in blue called?

What are the number(s) in

red called?

Open Ended

What are the numbers boxed in red called?

How many atoms of
hydrogen are in this

molecule?

Open Ended

How many Hydrogen?

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

below?

Open Ended

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

How many elements are
involved in this reaction?

Open Ended

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

Draw

Is it balanced?

NaBr + CaF2 → NaF + CaBr2

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KeslerScience.c

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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

Draw

Is it Balanced?

H2 + O2 → H2O