Balancing Equations

by Gregory Sukowaty

| 10 QuestionsObjectives: Students will be able to explain the conservation of mass and demonstrate the process of balancing a chemical equation.

Standards:

HS.PS1.7- Use mathematical representations to support the claim, that atoms, and therefore mass, are conserved during a chemical reaction.

HS.Crosscutting.Energy- The total amount of energy in a closed system is conserved in a chemical reaction.

1

2

3

4

5

6

7

8

1

1

From left to right:

Select the number set that will balance the equation.

1-5-3-4

2-3-4-2

1-6-4-4

1-3-3-5

2

1

The product from this reaction is Sodium Chloride.

True

False

3

1

Show, step by step, how to balance this equation.

4

1

From left to right:

Select the number set that will balance the equation.

4-2-1

2-5-4

8-10-2

8-16-1

5

1

What kind of reaction is this?

6

1

From left to right:

Select the number set that will balance the equation.

4-7-1-9

2-7-1-6

4-2-2-8

2-7-1-9

7

1

From left to right:

Select the number set that will balance the equation.

2-1-1-2

3-2-2-3

2-1-2-4

2-2-1-4

8

1

From left to right:

Select the number set that will balance the equation.

3-2-1-1

1-1-2-3

3-3-1-1

2-2-1-1

9

1

Write in your own words what is meant by conservation of mass.

10

1

Explain the steps you take to balance a chemical equation

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