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Unit 3

Elements & Compounds

Atom The smallest unit of an element that has all of the properties of that element
Chemical Bond A means by which atoms, ions, or groups of atoms are held together in a molecule or crystal
Chemical Formulas A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type of atoms and number of atoms that are present in the smallest unit of the substance
Chemical Symbol The symbol which represents each element on the Periodic Table
Compound Matter that is composed of two or more elements that are chemically combined
Element A pure substance that cannot be separated into simpler substances by physical or chemical means
Molecule Two or more atoms joined together
Periodic Table of Elements An arrangement of the elements according to their atomic numbers and periodic trends of physical and chemical properties
Created by: jennychapates