Chemistry

Multiple Choice

What reaction type is characterized by the reactant breaking down as the reaction progresses?

• Synthesis
• Decomposition
• Combustion
• Double Replacement

Multiple Choice

What is the term for the → sign in a reaction?

• makes
• produces
• yields
• all are correct

Multiple Choice

What two molecules are produced in a combustion reaction?

• CO₂ + NH₄
• SiO₂ + H₂O
• H₂O + CO₂
• CO₂ + H₂O₂

Multiple Choice

Which set of coefficients properly balances the reaction below?
_Cu + _H₂O →_ CuO₃ + _H₂

• 1,3,1,5
• 2,6,2,6
• 1,3,1,3
• 1,2,3,4

Multiple Choice

What is the coefficient of AgNO₃ in this reaction?
_AgNO₃ + _H₂S →_Ag₂S+_HNO₃

• 1
• 2
• 3
• 4

Multiple Choice

Which of the following can be categorized as a synthesis reaction?

• Ba + NaCl →BaCl₂ + Na
• KNO₃→K⁺ + NO₃^-
• 2Li + F₂ → 2LiF
• HCl + LiNO₃ → HNO₃ + LiCl

Multiple Choice

What are the correct coefficients for the reaction below?
_C₄H₁₀ + _O₂ → _CO₂ + _H₂O

• 4, 26, 16, 20
• 2, 13, 8, 10
• 1, 6.5, 4, 5
• 2, 8, 13, 10

Multiple Choice

What type of reaction is displayed below?
2Al + Fe₂O₃ → 2Fe + Al₂O₃

• Single Replacement
• Double Replacement
• Synthesis
• Combustion

Multiple Choice

What type of reaction is characterized by two compounds switching bonding partners?

• Single Replacement
• Combustion
• Synthesis
• Double Replacement

Multiple Choice

What are the correct coefficients to balance the reaction below?
_BaO + _K₃N → _Ba₃N₂ + _K₂O

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

Multiple Choice

___________________ are the elements/compounds formed in a chemical reaction (on the right)

• Polymers
• Bonds
• Reactants
• Products

Multiple Choice

What are the reactants in the chemical equation pictured?

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

Multiple Choice

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• NO!

Multiple Choice

Is this balanced?...
Fe + S --> FeS

• YES!
• NO!

Multiple Choice

The red numbers in the image below represent ________

• subscripts
• coefficients
• None of the answers are correct