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matter anythingthat has mass and occupies space.
element a subforce composed of a single kind of atom that cannot be broken down into other substances by chemecal physical means.
periodic table an organized table of all the known elements.
atomic number the number of protons or electrons in an element.
atomic symbol an abreveation for the element name.
atomic mass the mass of the protons and neutrons (also known as the atomic weight).
compound a substance in which two or more elements are chemicaly joined in a set ratio.
mixture two or more substances that are mixed together but not chemicaly combined.
atom the smallest unit of an element that retains properties of that element.
nucleus the central core of an atom that contains the protons and nuetrons.
protons small,positively charged partical in the nucleus of an atom.
nuetron uncharged particals in the nucleus of an atom.
electron a tiny negitevly charged high energy partical that moves in the space around the nucleus of an atom.
electron shells fixed orbits or paths that electrons travle in around the nucleus.
molecule two or more atoms that are bonded together
chemical bond the force that holds two or more atoms together
Created by: brandon3