LCHS Chemistry 2020-21 Quiz Balancing Chemical Equations

What is the left part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Yields

• Products

• Chemical equation

What is the right part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Yields

• Products

• Chemical Equation

How many Mn atoms are found in the following compound?

2MnO₄

• 1

• 2

• 4

• 8

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

• 5

• 55

• 40

• 8

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

Example: H₂

• Coefficient

• Atom

• Subscript

• Equation

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

• Coefficient

• Atom

• Subscript

• Equation

Is the following equation balanced?

2C₂H₂ + 5O₂ ---> 4CO₂ + 2H₂O

• YES

• NO

Is the following equation balanced?

4Fe + 3O₂ ---> 2Fe₂O₃

• YES

• NO