Balancing Equations

What is the left part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Products

• Yield

• Chemical Equation

What is the right part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Products

• Yield

• Chemical Equation

What is the total number of atoms present in 5Na₃PO₄?

• 5

• 40

• 55

• 8

How many Mn atoms are found in the following compound?

2MnO4

• 1

• 2

• 4

• 8

What is the little number after an element in a chemical equation called?

Example: H₂

• Coefficient

• Subscript

• Atom

• Equation

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• Yes

• No

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

• Coefficient

• Subscript

• Atom

• Equation

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Which of the following equations are correctly balanced?

• 12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

• CO2 + H2O ---> 3C6H12O6 + O2

• CO2 + 9H2O ---> C6H12O6 + O2

• 6CO2 + 6H2O ---> C6H12O6 + 6O2

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• 3H2 + Cl2 ---> 6HCl

• H2 + Cl2 ---> 2HCl

• H2 + 3Cl2 ---> 6HCl