Its Elements
Any substance that cannot be broken down into simpler substances is an?
If an unknown substance cannot be broken down into simpler substances it is made of one kind of atom and an element.
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
Elements
A substance that cannot be broken down is a pure substance
All of the elements of the periodic table cannot be broken down into simpler substances.
Not: atoms The answer is an element
This change is possible.
cannot be broken down into simpler substances by chemical means
No. Elements cannot be broken down into simpler substances in a chemical reaction.
an element is a substance that cannot be broken down into a simpler form by chemical means
An element.