Sagot :
Answer:
1. Decomposition
2. Combination
3. Decomposition
4. Single replacement
Explanation:
Decomposition is a type of chemical reaction wherein one reactant yields two or more products.
Decomposition reaction has a pattern of:
A → B + C
Numbers 1 and 3 follow this pattern.
Combination is a type of chemical reaction wherein two or more reactants (usually two reactants) yield one product.
Combination reaction has a pattern of:
A + B → C
Number 2 follows this pattern.
Single replacement is a type of chemical reaction wherein an element in free state or a diatomic element replaces another in a compound.
Single replacement reaction has a pattern of:
A + BC → AB + C
Number 4 follows this pattern.
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