Balancing Equations Notes Part 2

Bellwork 1/6- Vocabulary

Page 77

Balancing Equations

Multiple Choice

Is the equation balanced?

Equation: Al + O₂ → 2Al₂O₃

• Yes, it is balanced.

• No!

• It is partially balanced.

• It cannot be determined.

Multiple Choice

Balanced equation?

2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O

• yes

• no

• partially

• uncertain

Multiple Choice

Balanced reaction?

NaHCO₃ → Na₂CO₃ + H₂O + CO₂

• yes

• no

• partially

• depends on conditions

Multiple Choice

Balanced equation?

4Fe + 3O₂ → 2Fe₂O₃

• yes

• no

• partially

• uncertain

Multiple Choice

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl₂ + H₂

• 1
• 2
• 3
• 4

Multiple Choice

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

Multiple Choice

Determine the coefficients to balance the chemical equation.

___Al + ___O₂--> ___Al₂O₃

• 4, 1, 2

• 4, 3, 4

• 3, 4, 1

• 4, 3, 2