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Definition
| quantity of matter an object has |
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Definition
| anything that occupies space and has mass |
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Definition
| substances that can't be broken down chemically into simpler kinds of matter |
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| the simplest particle of an element that retains all of the properties of that element |
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Definition
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Definition
| positively charged and the neutron has no charge |
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Definition
| number of protons in an atom of an element |
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Term
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Definition
| equal to the total number of protons and the neutrons of an atom |
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Definition
| negatively charged particle, high-energy particle that have little mass that are found outside the nucleus in an electron cloud or orbits |
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Definition
| 3d region around a nucleus that indicate the probable location of an electron |
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Definition
| atoms of the same element that have a different number of neutrons |
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Term
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Definition
| when 2 or more atoms are chemically combined |
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Definition
| the attractive forces that hold atoms together |
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Term
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Definition
| forms when 2 atoms share one or more pairs of electrons |
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Term
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Definition
| simplest part of a substance that retains all of the properties of that substance and can exist in a free state |
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Term
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Definition
| positive and negative electrical charge that attract each other |
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Definition
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Definition
| one or more substance chemically change to produce one or more different substances |
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Definition
| the substance of two reactants combined |
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Definition
| term used to describe all of the chemical reactions that occur in an organism |
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Term
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Definition
| the amount of energy needed to start the reaction (produces heat) |
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Term
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Definition
| a substance that reduces the amount of activation energy needed to start a reaction |
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Definition
| a protein or RNA molecule that speeds up metabolic reactions without being permanently changes or destroyed (in an organism) |
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Definition
| reaction in which electrons are transferred between atoms |
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Definition
| a reactant loses one or more electrons, thus becoming more positive in charge |
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Definition
| a reactant gains one or more electrons, thus becoming more negative in charge |
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Term
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Definition
| uneven distribution of charge |
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Term
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Definition
| force of attraction between a hydrogen molecule with a partial positive charge and another atom or molecule with a partial or full negative charge |
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Term
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Definition
| an attractive force that holds molecules of single substance together |
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Term
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Definition
| particles are clinging together |
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Term
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Definition
| an attractive force that holds molecules of a single substance together |
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Term
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Definition
| a mixture in which one or more solutes are uniformly distributed in another solvent |
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Term
| concentration of a solution |
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Definition
| the amount of solute dissolved in a fixed content of a solvent |
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Definition
| a solution that can't dissolve any more solute |
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Definition
| solution when water is the solvent |
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Definition
| taste sour, feel rough to the skin, highly corrosive |
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Term
| different forms of energy |
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Definition
solid- definite shape, molecules vibrate
liquid- take the shape of its container, molecules move faster then solid
gas- takes the shape of its container, molecules move most rapidly |
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