Balancing Equations Test

Balance this equation:
 2Li + Cl₂ -> LiCl

• 2Li + Cl₂ -> 4LiCl2
• 2Li + Cl₂ -> LiCl₂
• 2Li + Cl₂ -> 2LiCl

Which number should go in the blank?
_ H₂ + O₂ -> 2 H₂O

• 1
• 2
• 3
• 0

Balance the following equation by filling in the blank:

N₂ + 3H₂ → _NH₃

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.
• The total mass of the reactants is greater than the total mass of the products.
• The total mass of the reactants is less than the total mass of the products.
• Matter is not changed.
  

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

What is the total number of atoms present in 5Na₃PO₄

• 5
• 40
• 55
• 8

Which of the following equations are correctly balanced?

• 12CO₂ +H₂O --> C₆H₁₂O₆ + O₂
• CO₂ + 9H₂O --> C₆H₁₂O₆ + O₂
• CO₂ + H₂O --> 3C₆H₁₂O₆ + O₂
• 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

Balance the following equation:

___ SeCl₆+ ___ O₂→___ SeO_{2+____}Cl₂

• 1, 1, 1, 3

• 2, 1, 2, 1

• 1, 2, 1, 2

• 2, 2, 2, 4

How many Mn atoms are found in the following compound?
3Cr(MnO₄)₆

• 3
• 4
• 6
• 18

What is the right ratio of chemicals for the balanced chemical equation?

__Na + __H₂O --> __NaOH + __H₂

• 4,4 --> 4,1

• 1,2 --> 2,4

• 1,2 --> 2,1

• 2,2 --> 2,1