Basics of Chemical Reactions

HgO --> Hg + O₂

• Synthesis
• Decomposition
• Single
• Combustion

Mg + HCl --> MgCl₂ + H₂

• Single Displacement
• Double
• Combustion
• Synthesis

Zn + H₂SO₄ --> ZnSO₄ + H₂

• Combustion
• Single Displacement
• Double
• Decomposition

H₂ + O₂ --> H₂O

• Decomposition
• Synthesis
• Combustion
• Single

C₆H₁₂ + 9O₂ --> 6CO₂ + 6H₂O

• Synthesis
• Single Displacement
• Combustion
• Decomposition

What coffecients would balance the following chemical equation:
P  +  O₂ →  P₄O₁₀

• 1, 1, 1
• 1, 2, 1
• 4, 5, 1
• 3, 2, 4

What coffecients would balance the following chemical equation:
Al₂O₃ →  Al  +  O₂

• 1, 1, 1
• 1, 2, 1
• 4, 5, 1
• 2, 1, 3

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

• charge
• subscript
• random number
• coefficient

Which of the following is evidence of a chemical reaction?

• a solid producing bubbles

• water changing to ice
• saltwater
• paper being cut in half

The substances at the beginning of a chemical reaction are called the ____

• product
• yield
• chemical symbol
• reactants