Question

1. summarize the types of reactions by selecting a description of each reaction to match the reaction type.

combination
decomposition
single replacement
double replacement
combustion
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Explanation:

To solve this, we recall the definitions of each reaction type:

Combination Reaction

A reaction where two or more substances combine to form a single product. So match "Combination" with the description of substances combining (e.g., \( A + B
ightarrow AB \)).

Decomposition Reaction

A reaction where a single compound breaks down into two or more simpler substances. So match "Decomposition" with the description of a compound breaking apart (e.g., \( AB
ightarrow A + B \)).

Single Replacement Reaction

A reaction where one element replaces another in a compound. So match "Single Replacement" with the description of an element replacing another (e.g., \( A + BC
ightarrow AC + B \)).

Double Replacement Reaction

A reaction where the positive and negative ions of two compounds exchange places. So match "Double Replacement" with the description of ion exchange (e.g., \( AB + CD
ightarrow AD + CB \)).

Combustion Reaction

A reaction where a substance reacts with oxygen, often producing heat and light (e.g., burning hydrocarbons: \( \text{Hydrocarbon} + \text{O}_2
ightarrow \text{CO}_2 + \text{H}_2\text{O} \)).

Assuming the standard descriptions (if options were, e.g.,):

• A: Two or more substances combine to form one substance.
• B: A compound breaks down into simpler substances.
• C: One element replaces another in a compound.
• D: Ions of two compounds exchange places.
• E: A substance reacts with oxygen, producing \( \text{CO}_2 \) and \( \text{H}_2\text{O} \) (for hydrocarbons).

Final Matches:

• Combination: A
• Decomposition: B
• Single Replacement: C
• Double Replacement: D
• Combustion: E

(Note: If the actual option descriptions differ, adjust based on the specific definitions, but the above follows the standard chemical reaction type definitions.)

Answer:

Combination: A
Decomposition: B
Single Replacement: C
Double Replacement: D
Combustion: E