Balancing Equations (Candy Lab + CER)

Unit 16: Balancing Equations

Unit 16: Balancing Equati

By Raven Turner

Make a prediction of what will happen to the mass of the steel wool. ​

Everyday Phenomenon

Open Ended

What is your prediction?

Open Ended

Why is it important to balance chemical reactions?

Open Ended

Explain why subscripts cannot be changed when balancing equations.

Open Ended

Explain the law of conservation of mass as it relates to balancing chemical equations.

Drag and Drop

Place a number in the blank before each reactant and product to balance the following chemical equation:​

​

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Co + ​

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H₂O → ​

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Co₂O₃ + ​

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H₂

Drag these tiles and drop them in the correct blank above

2

3

1

Multiple Choice

Which of the following is true of chemical reactions?

• Chemical reactions may create more atoms.

• Chemical reactions may reduce the number of atoms.

• The products of a chemical reaction must contain the same number of atoms as the compounds at the beginning of the reaction.

• Chemical reactions always build new chemical substances; they never break them down.

Multiple Choice

Why is the following chemical reaction unbalanced?

         CO + O₂  → CO₂

• The number of carbon atoms is different on each side of the equation

• The mass is the same on both sides of the equation

• There are two reactants but only one product.

• The number of oxygen atoms is different on each side of the equation.