8.2 Synthesis and Decomposition Reactions

Multiple Choice

This chemical equation for mercury oxide is an example of what type of reaction?
2HgO  → 2Hg + O₂

• decomposition reaction
• synthesis reaction
• combustion reaction
• Marvin the Martian reaction

Multiple Choice

This chemical equation for magnesium oxide is an example of what type of reaction?
2Mg + O₂  → 2MgO

• decomposition reaction
• synthesis reaction
• single displacement reaction
• combustion reaction

Multiple Choice

Which coefficients are required to correctly balance the equation: 
C₂S₂ + O₂ → CO₂ + S₂O

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

Multiple Choice

Balancing the following:

____ Al + ____ HCl → ____ AlCl₃ + ____ H₂

• 1,3,1,2
• 2,3,2,3
• 2,6,2,3
• 3,2,6,2