Question

An example of a substance that can be decomposed by a chemical change is:

A)silver
B)water
C)iron
D)helium

Answer 1

Answer: C. Iron

Explanation: The best answer is iron because it rusts when exposed to oxygen and over time it will decompose over that time period.

Answer 2

b) Water

Step-by-step explanation:

Water is an example of a substance that can be decomposed by a chemical change. Because, elements cannot be decomposed. Hence, option (b) is correct.