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Ch 8 Vocabulary Sci


atom an extremely small particle that is the basic unit of matter and is composed mainly of protons,neutrons, and electrons.
chemical formula a formula composed of symbols and numbers that tell what elements make up a compound and what their ratios are.
compound a form of matter made by combining two or more different kind of elements.
electrons negatively charged particles that are the lightest of the three main particles found in an atom, and that form a cloud around the atom's nucleus.
element natural or synthetic matter that is made up of only one type of atom; there are 112 known elements for example,gold,aluminum,and oxygen.
matter anything that has mass and takes up space for example,air;its basic unit is the atom.
mixture two or more substances put together that do not combine to form a compound; can be the same throughout or made of several different iteams that can be seen
neutron a particle without a charge that is found in the nucleus of an atom
periodic table a chart that organizes all known elements by the number of protons in the nucleus of each element and gives information such as the mass of an atom,the pattern of electrons,and weather an element is a solid,liquid,or gas.
proton a positiveley charged particle located in the nucleus of an atom.
Created by: anguyen