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33 Cards in this Set
- Front
- Back
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matter |
anything that has mass and occupies space |
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chemistry |
the study of propities of matter and how matter changes |
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subtance |
a single kind of matter that is pure and has a specific set of properties |
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physical property |
a charterictic of a pure substance that can observed without changing it into another substance |
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chemical property |
a characterisitic of a pure substance that describes its ability to change into a different substance |
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element |
a pure substance that can not be broken down into other substances by chemical or phicycle means |
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chemical bond |
the force that holds two atoms together |
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molecule |
a partical made of two or more atoms bonded together |
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compound |
a pure substance made of two or more elements chemicaly combined |
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chemical formula |
a formula that gives the elements ina compound and the ratio of atoms |
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homogerous mixture |
a mixture in whiche substances are evenly distrubeted throughout the mixture |
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heterogerous mixture |
a mixture in which substances are unevenly distrubeted throughout the mixture |
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soultion |
an example of homogenerous mixture; forms when substances dissolve |
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weight |
a mesure of the force of gravity on an object |
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mass |
a measure of how much matter is in an object |
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intrenation system of units |
the SI used by scientist to measure the propties of matter |
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volume |
the amount of space that matter occupies |
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density |
the measument of how much mass of a substance is contained in a givin volume |
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phycial change |
a change in a substance that does not change its identy |
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chemical change |
a change in which one or more substances combine or break apart to form new substances |
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lawas of conversation of mass |
the princable that the total amountis nethier created nor destroded during ant chemical or phycle change |
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energy |
the ablity to work or cause change |
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temperture |
a measure of average motion of the particles of a substanes |
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thermal energy |
the total energy of all the particles of an object |
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endothermic change |
a change in which energy is taken in |
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kinetic energy |
the energy of matter in motion |
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potential energy |
the energy an object has because of its position also the internal stored energy of an object such as energy stored in chemical bonds |
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chemical energy |
a form of potential energy that is stored in chemical bonds between atoms |
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electromatioc energy |
a form of enegy that traves through space as waves |
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elcerical energy |
the energy electroally charged particles moving from one place to another |
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electrode |
a metal strip that conducts elecrticy |
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atom |
the bacis particle from which all elements are made |
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mixture |
two or more substances that are mixed together but do not chemiaclly combine |
