Question

1. a starting material in a chemical reaction.
2. ending materials in a chemical reaction.
3. two or more reactants combine to make 1 new product.

a) combustion reactions
b) double - replacement reactions
c) single - replacement reactions
d) decomposition reactions
e) synthesis reactions

1. a single element or compound combines with oxygen gas releasing energy. this rapid oxidation is called burning.

a) combustion reactions
b) double - replacement reactions
c) single - replacement reactions
d) decomposition reactions
e) synthesis reactions

1. a single reactant breaks down to form 2 or more products.

a) combustion reactions
b) double - replacement reactions
c) single - replacement reactions
d) decomposition reactions
e) synthesis reactions

Explanation:

1. In a chemical reaction, starting materials are called reactants.
2. Ending materials in a chemical reaction are products.
3. Synthesis reactions involve two or more reactants combining to form one new product.
4. A single - element or compound combining with oxygen gas and releasing energy (rapid oxidation) is a combustion reaction.
5. A single reactant breaking down to form 2 or more products is a decomposition reaction.

Answer:

1. Reactants
2. Products
3. E. Synthesis reactions
4. A. Combustion reactions
5. D. Decomposition reactions