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GED Chemestry Vocab

Vocab, Missouri GED On-Line, Science: Chemistry

TermMeaning
acid a substance with a sour taste and low pH that conducts electricity when dissolved in water and that neutralizes bases
atom a tiny particle of matter consisting of protons, nuetrons, and electrons
atomic number the number of protons on the nucleus of an element
base a substance with a high pH that conducts electricity when disolved in water and that neutralizes acids
chemical reaction a process in which one substance or set of substances is changed into another substance or set of substances
compound a substence made of two or more elements chemically combined in exact proportion
covalent bond the combining of two or more atoms by the sharing of electrons
electron a negatively charged particle orbiting the nucleus of an atom
element a substance that cannot be broken down into a simpler substance by chemical means
ion an atom or molocule with an electric charge
Inoic bond The combing of two or more atoms by the transfering electrons
mixture a substance made up of two or more different substances that are not chemically combined; for example, salt water
molecule a group of two or more atoms held together by the sharing of electrons
neutron a neutral particle in the nucleus of an atom
periodic table chart in which the elements are arranged according to atomic weight and the number of electrons in their outer shells
polymer a compound that has very large molecules made up of thousands of smaller, identical molecules joined together
proton a positively charged particle in the nucleus of an atom
states of matter the different forms substances can take: solid, liquid, or gas