Reaction Types Quiz: How Much You Know?
A chemical reaction is a method that handles the chemical conversion of one chemical substance set to another. It encompasses changes that only include electrons' positions in the forming and breaking chemical bonds between atoms. Take this quiz to test your knowledge about the different types of reactions.
Questions and Answers
- 1.
Which type of reaction breaks down a single reactant into two or more products?
- A.
Single replacement
- B.
Double replacement
- C.
Synthesis
- D.
Decomposition
- E.
Combustion
Correct Answer
D. DecompositionExplanation
Decomposition is the type of reaction that breaks down a single reactant into two or more products. In this type of reaction, a compound is broken down into its constituent elements or simpler compounds. This process usually requires the input of energy, such as heat or light, to break the chemical bonds within the reactant molecule. As a result, the reactant molecule is broken down into multiple products, which can be elements or compounds. Therefore, decomposition is the correct answer to the question.Rate this question:
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- 2.
Which type of reaction forms a single product from two or more reactants?
- A.
Single replacement
- B.
Double replacement
- C.
Synthesis
- D.
Decomposition
- E.
Combustion
- F.
Acid-base neutralization
Correct Answer
C. SynthesisExplanation
Synthesis reactions involve the combination of two or more reactants to form a single product. This type of reaction is characterized by the formation of a new compound from the reactants, often with the release of energy. It is the opposite of a decomposition reaction, where a single compound breaks down into two or more simpler substances. In synthesis reactions, the reactants come together to create a more complex product.Rate this question:
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- 3.
Choose the following reactions where oxygen is a reactant; thus, and combustion takes place.
- A.
C5H9O + O2 à CO2 + H2O
- B.
C + O2® CO2
- C.
P4 + 3 O2 à 2 P2O3
- D.
SeCl6 + O2 à SeO2 + 3Cl2
Correct Answer(s)
A. C5H9O + O2 à CO2 + H2O
B. C + O2® CO2
C. P4 + 3 O2 à 2 P2O3
D. SeCl6 + O2 à SeO2 + 3Cl2Explanation
All of the given reactions involve oxygen as a reactant, indicating that combustion takes place. In these reactions, oxygen combines with other elements or compounds to form carbon dioxide, water, phosphorus oxide, or chlorine gas. Combustion reactions typically involve the reaction of a fuel (such as hydrocarbons or elemental carbon) with oxygen, producing carbon dioxide and water as products. Therefore, all of the given reactions exhibit combustion.Rate this question:
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- 4.
Which of the following reactions is not properly balanced?
- A.
C5H9O + O2 à CO2 + H2O
- B.
C + O2® CO2
- C.
P4 + 3 O2 à 2 P2O3
- D.
SeCl6 + O2 à SeO2 + 3Cl2
Correct Answer
A. C5H9O + O2 à CO2 + H2OExplanation
The given reaction C5H9O + O2 à CO2 + H2O is not properly balanced because the number of carbon atoms, hydrogen atoms, and oxygen atoms are not equal on both sides of the equation.Rate this question:
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- 5.
Identify the following reaction type using the codes: DR double replacement. SR single replacement SYN synthesis DEC decomposition COMB combustion AB acid/base neutralization Na3PO4 + 3 KOH à 3 NaOH + K3PO4
Correct Answer
DRExplanation
The given chemical equation represents a double replacement reaction. In this type of reaction, the cations and anions of two different compounds switch places, resulting in the formation of two new compounds. In this case, sodium phosphate (Na3PO4) reacts with potassium hydroxide (KOH) to produce sodium hydroxide (NaOH) and potassium phosphate (K3PO4). The cations (Na+ and K+) and anions (PO4- and OH-) have exchanged partners, indicating a double replacement reaction.Rate this question:
- 6.
Identify the following reaction type using the codes: DR double replacement. SR single replacement SYN synthesis DEC decomposition COMB combustion AB acid/base neutralization Pb + FeSO4 à PbSO4 + Fe
Correct Answer
SRExplanation
The given reaction involves a single replacement, also known as a substitution reaction. In this type of reaction, one element or ion is substituted for another element or ion in a compound. In the given reaction, lead (Pb) is replacing iron (Fe) in the compound FeSO4, resulting in the formation of PbSO4 and Fe.Rate this question:
- 7.
Identify the following reaction type using the codes: DR double replacement. SR single replacement SYN synthesis DEC decomposition COMB combustion AB acid/base neutralization 2 C5H5 + Fe à Fe(C5H5)2
Correct Answer
SYNExplanation
The given reaction involves the combination of two reactants, 2 C5H5 and Fe, to form a product, Fe(C5H5)2. This is a synthesis reaction, also known as a combination reaction, where two or more substances combine to form a single product. In this case, the two reactants combine to form a complex compound, Fe(C5H5)2.Rate this question:
- 8.
Identify the following reaction type using the codes: DR double replacement. SR single replacement SYN synthesis DEC decomposition COMB combustion AB acid/base neutralization 2 NO2 à 2 O2 + N2
Correct Answer
DECExplanation
The given reaction represents a decomposition reaction (DEC) because it involves the breakdown of a compound into simpler substances. In this case, 2 molecules of NO2 are decomposed into 2 molecules of O2 and 1 molecule of N2.Rate this question:
- 9.
List the correct order of coefficients in the following reaction: ____ Pb + ____ H3PO4 à ____ H2 + ____ Pb3(PO4)2
Correct Answer
3231Explanation
The correct order of coefficients in the given reaction is 3 Pb + 2 H3PO4 à 3 H2 + 1 Pb3(PO4)2.Rate this question:
- 10.
List the correct order of coefficients in the following reaction: ____ HBr + ___ Al(OH)3 à ___ H2O + ___ AlBr3
Correct Answer
3131Explanation
The correct order of coefficients in the given reaction is 3131. This means that there is one HBr molecule reacting with three molecules of Al(OH)3 to produce three molecules of H2O and one molecule of AlBr3.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Mar 10, 2021Quiz Created by
Catherine Halcomb
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