Summative Retake - Unit 7 Chemistry 05312024

What is the correctly balanced version of the equation: CBr₄ + H₂ --> CH₄ + Br₂

• CBr₄ + H₂ --> 2CH₄ + Br₂
• CBr₄ + 2H₂ --> CH₄ + 2Br₂
• 2CBr₄ + H₂ --> 2CH₄ + Br₂
• 2CBr₄ + H₂ --> CH₄ + 2Br₂

What is the correct type of the reaction: CBr₄ + H₂ --> CH₄ + Br₂

• decomposition
• combustion
• single replacement
• synthesis

What are the product(s) in the reaction: CBr₄ + H₂ --> CH₄ + Br₂

• CH₄ + Br₂
• CBr₄ + H₂
• CBr₄
• Br₂

What is the correctly balanced version of the equation: CH₂ + O₂ --> CO₂ + H₂O

• 2CH₂ + O₂ --> 2CO₂ + 2H₂O
• CH₂ + O₂ --> 2CO₂ + H₂O
• 2CH₂ + 3O₂ --> 2CO₂ + 2H₂O
• 2CH₂ + O₂ --> 2CO₂ + H₂O

What type of reaction is: CH₂ + O₂ --> CO₂ + H₂O

• double replacement
• combustion
• single replacement
• decomposition

What are the reactants in the reaction: CH₂ + O₂ --> CO₂ + H₂O + energy

• CH₂
• CH₂ & O₂
• CO₂ & H₂O
• O₂

What is the reaction type of: CH₂ + O₂ --> CO₂ + H₂O + energy

• endothermic
• exothermic

What is the correctly balanced version of: W₂O₃ + K₃N --> WN + K₂O

• W₂O₃ + 2K₃N --> WN + 2K₂O
• 2W₂O₃ + K₃N --> 3WN + K₂O
• W₂O₃ + 2K₃N --> 2WN + 3K₂O
• W₂O₃ + K₃N --> 2WN + K₂O

What is the reaction type of: W₂O₃ + K₃N --> WN + K₂O

• synthesis
• single replacement
• double replacement
• decomposition

What are W₂O₃ & K₃N referred to as in the following reaction: W₂O₃ + K₃N --> WN + K₂O

• yield
• product
• reactant
• coefficient