Time and Mass. All particles can be broken down into smaller particles endlessly.
An element
A compound
If an unknown substance cannot be broken down into simpler substances it is made of one kind of atom and an element.
All of the elements of the Periodic Table cannot be broken down into simpler substances.
Elements and compounds (pure substances) cannot be broken down by physical changes.
Not: atoms The answer is an element
These are the chemical elements.
All of the elements of the periodic table cannot be broken down into simpler substances.
No, it can be broken down.
Atoms cannot be broken down into simpler substances
an element is a substance that cannot be broken down into a simpler form by chemical means
An element.
An element.
If an unknown substance cannot be broken down into simpler substances it is made of one kind of atom and an element.
Any substance that cannot be broken down into simpler substances is an?
An element cannot be broken down into a simpler substance by chemical means.
Its Elements
An element is the only substance that cannot be broken down.
No. Elements cannot be broken down into simpler substances in a chemical reaction.