Question

Which substance can be broken down by a chemical change ?

1) magnesium
2) manganese
3) mercury
4) methanol

Answer 1

Methanol

Step-by-step explanation:

Methanol is a compound and compounds are pure substances formed by the combination of elements; they can be decomposed by ordinary chemical means. The other answers are incorrect because they are elements and elements consists of only one kind of atom and they cannot be broken down into a simpler type of matter by either physical or chemical means.

Answer 2

4) Methanol can be broken down by chemical change .