atom - the basic particle of all matter, made up of protons, neutrons, and electrons, proton - Large subatomic particles with a POSITIVE change in the nucleus, nucleus - center, electrons - tiny subatomic particles with a NEGATIVE change speeding crazily around the outside of the nucleus, neutrons - Large subatomic particles with NO CHARGE in the nucleus of an atom, element - a substance made up of one type of atom like gold, oxygen, carbon, molecule - a particle made up of 2 or more atoms CHEMICALLY combined (bonded) like water, Periodic Table - lists and organizes all 118 elements , chemical symbol - a shorthand way to identify elements (capitalization matters), atomic number - number of protons in the nucleus , atomic mass - an average of the number of protons + the number of neutrons in each atom, matter - anything that has mass and takes up space,

Atoms and Elements

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