an element which is then broken down into: protons, neutrons, and electrons. for a list of elements see a Periodic Table
substances that cannot be broken down chemically into other substances are
This is the atom of a chemical element, unbreakable by chemical methods.
A substance that cannot be broken down is a pure substance
The simplest substance that you can obtain by ordinary means is an element.An element is a substance than cannot be separated or broken down into simpler substances by chemical means.
Substances that cannot be chemically broken down into simpler substances are called elements.
that makes no sense. please make more sense.
Not: atoms The answer is an element
An element.
This is called an element.
All substances can be broken into any other substances (or elements) by chemical or physical methods.
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
Elements cant be, unless you are talking about sub-atomic level. Substances can be broken down to elements possibly.