Question

A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a ______ reaction?

A) Combination
B) Double-Replacement
C) Decomposition
D) Substitution

Answer 1

Answer:

a

Explanation:

A) Combination

Answer 2

Answer:

A

Explanation:

Addition Reaction.

Reactions in which two or more chemical substances undergo a chemical union is called Addition reaction.

For example:

A + B ------>  C.

Or

A + B + C ------> D

Above are examples of Addition reaction.