CP Reactions Test

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

What are the reactants in the chemical equation pictured?

• CH₄ and CO₂
• CH₄ and O₂
• CO₂ and H₂O
• O₂ and H₂O

What are the products of the chemical reaction pictured?

• CH₄ and CO₂
• CH₄ and O₂
• CO₂ and H₂O
• O₂ and H₂O

According to the law of conservation of mass:

• sometimes atoms are lost
• sometimes atoms are gained
• atoms are never lost nor gained
• atoms are lost and gained

Which of these formulas contain 2 nitrogen atoms? (Answer with all that apply)

• Formulas I and III
• Formulas I and IV
• Formulas II and III
• Formulas I, II, and V

All of the following reactions are correctly balanced except-

• A
• B
• C
• D

What type of reaction involves 2 elements combining to form 1 new compound?

• Decomposition Reaction
• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction

The red numbers in the image represent ____________.

• subscripts
• coefficients
• charges
• None of the answers are correct

The blue numbers in the image represent __________.

• charges
• coefficients
• subscripts
• none of the answers are correct

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

• 4Fe + 3O₂ -> 2Fe₂O₃
• 2 Fe + 3O₂ -> Fe₂O₆
• 4 Fe + O₆ -> 2Fe₂O₃
• None of the options are correctly balanced.