substance that cannot be changed into simpler substances by chemical means
A chemical reaction, though often it is not a simpler substance.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
An element is a substance that cannot be broken down into simpler substances through chemical reactions.
A "decomposition" or "disproportionation" reaction.
Not: atoms The answer is an element
An element cannot be separated into simpler substances by chemical means.
A chemical reaction, though often it is not a simpler substance.
physical means only
studyisland answer : water
cannot be broken down into simpler substances by chemical means
An element.
An element is a substance that cannot be split into simpler substances through chemical means. It is composed of only one type of atom.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
Any substance that cannot be broken down into simpler substances is an?
element
element
An element is a pure substance that cannot be broken down into simpler substances by chemical means.