Balancing EquationsFlip Book

Balancing Equations Flip Book

• Take two sheets of paper• Stagger them and then fold them over like steps.

Balancing Equations

H 2 + O2 2H2O

2H 2 + O2 2 H2O

H 2 + O2 H2O

H2 + 02 H2O

1. What is not balanced in this equation?

2. Why do we have to balance equations?

3. What is the Law of Conservation of Mass? Explain it.

Reactants

Products

Law of Conservation of

Mass

H2 + 02 H2O

What is not balanced in this equation?

Why do we have to balance equations?

What is the Law of Conservation of Mass? Explain it.

1. In this equation, the Oxygens are not balanced. There are 2 oxygens in the reactants and 1 oxygen in the product. 2. We have to balance equations because the Law of Conservation of Mass tells us that matter cannot be created or destroyed.

H2 + 02 2 H2O

1. Why was the 2 added before the water?

2. When the coefficient was added what other element was messed up?

3. Why do you have to add a coefficient and not a subscript?

Reactants

Products

Coefficient

subscript

H2 + 02 2 H2O

Why was the 2 added before the water?

When the coefficient was added what other element was messed up?

Why do you have to add a coefficient and not a subscript?

1. The coefficient 2 was added in front of the product in order to balance the oxygens.

2. When the oxygens were balanced, it messed up the hydrogens in the reactants.

3. The reason we have to add a coefficient is because if you add a subscript, it changes the whole compound.

2H2 + 02 2 H2O

When you added the coefficient in front of the H2 , what did it do?

Is your equation balanced?

Why do you have to balance equations?

How many oxygens and hydrogens are on each side of the equation?

Reactants

Products

Coefficient

Law of Conservation of

Mass