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Chemistry
Overview
chemistry

The study of the structure of matter; the composition of substances,
and how they react with each other
 Mutual attraction or sympathy; rapport: The chemistry was
good between the partners.
chem·i·cal
Abbr. chem.
 Adjective 1.Of or relating to chemistry.
2. Of or relating to the properties or actions of chemicals.
Noun-1. A substance with a distinct molecular composition that is
produced by or used in a chemical process.
2. A drug, especially an illicit or addictive one.
— chem¹i·cal·ly adverb
element



A substance that cannot be broken down into any simpler
substance by normal means.
There are 92 naturally occurring elements.
For example: carbon, oxygen, hydrogen, gold, silver, iron, etc.
atom

The smallest part of an element that possesses all the properties of
that element.
molecule


The unit that results when two or more atoms bond together.
The atoms can be the same element or two or more different
elements.