Chemical Equations and balancing

Balance this equation:  H₂ + N₂ → NH₃

•  H₂ + 4N₂ → NH₃
•  H₂ + 3N₂ → 2NH₃
•  3H₂ + N₂ → 2NH₃
•  2H₂ + 2N₂ → 2NH₃

How many total atoms are represented?         4Al₂O₃

• 2
• 8
• 5
• 20

Substances that enter into a chemical reaction (found to the left side of the arrow) 

• product
• reactant
• chemical
• balanced equation

The large number in front of a chemical formula or compound is the ___________. 

• coefficient
• product
• physical
• chemical

In every balanced chemical equation, each side of the equation has the same number of ____.  

• coefficients
• moles
• molecules
• atoms of each element

Is the following equation balanced or unbalanced?
Fe + S --> FeS

• balanced
• unbalanced

When balancing equations what does
 -->
mean?

• subscript
• equals
• it is just an arrow
• yield

What is the part of the chemical equation in green called? 
Fe + S --> FeS

• products
• reactants
• yield
• chemical formula

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3