Types of Reactions: Mastery Test

Select the correct answer. What type of reaction is depicted by this equation? 2C₄H₁₀(g) + 13O₂(g) → 8CO₂(g) + 10H₂O(g)

• combustion

• single–replacement

• combination

• decomposition

Select the correct answer. Iron (Fe) reacts with copper sulfate (CuSO₄) to form iron (II) sulfate. In this reaction, Cu²⁺ gains electrons to form Cu. Which statement is true about this reaction? Fe(s) + CuSO₄(aq) → FeSO₄(aq) + Cu(s)

• Cu undergoes decomposition.

• Cu undergoes oxidation.

• Cu undergoes reduction.

• Cu undergoes combustion.

Select the correct answer. Two pairs of dancers encounter each other on the dance floor. The couples switch partners with each woman now dancing with the other man. This situation is analogous to which kind of reaction?

• single–replacement

• combustion

• decomposition

• double–replacement

Select the correct answer. What type of reaction does this equation represent? 2I₂O₅(s) → 4I₂(s) + 5O₂(g)

• combination

• decomposition

• single–replacement

• double–replacement

Select the correct answer. When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg²⁺. Which statement is true about this reaction?

• It involves gain of electrons.

• It involves loss of electrons.

• It involves loss of oxygen.

• It involves gain of hydrogen.

Select the correct answer. What type of reaction is depicted by this equation? Mg(s) + H₂O(l) → Mg(OH)₂(aq)

• combustion

• single–replacement

• combination

• decomposition

Select the correct answer. Aluminum can react with oxygen gas to produce aluminum oxide (Al₂O₃). What type of reaction is this?

• single–replacement

• synthesis

• double–replacement

• decomposition

Select the correct answer. An unknown metal displaces aluminum (Al) from solution but does not displace sodium (Na). Using the activity series, determine the unknown metal.

• calcium (Ca)

• zinc (Zn)

• manganese (Mn)

• magnesium (Mg)