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Dr. H Atom-Molecule

Dr. Heiny: (Standard 01) Atomic Structure

Atom The smallest sample of an element that has all the element's chemical properties. Atoms are electrically neutral because they have the same number of protons and electrons.
Compound a substance made of two or more kinds of atoms that are chemically combined
Electron A negatively charged subatomic particle that is usually found moving very fast through the empty space around the nucleus of an atom; an effective charge of negative one.
Proton The positively charged subatomic particle found in the nucleus of the atom; has a mass of 1 atomic mass unit (amu).
Neutron the electrically neutral subatomic particle found in the nucleus
Nucleus An extremely small and dense center of an atom where the protons and neutrons are located.
Isotope Atoms of one kind of element that have differing numbers of neutrons but identical number of protons.
Element A substance that contains one type of atom and cannot be broken down by simple means.
Created by: LPH