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23 Cards in this Set
- Front
- Back
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Volume |
the space an object takes up |
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mass |
amount of matter in an object |
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matter |
anything that has mass and volume |
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weight |
how strongly gravity pulls on an object |
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State of matter |
3 forms: solid, liquid or gas |
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melting point |
temperature at which a solid changes into liquid |
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evaporation |
when liquid turns into gas As temperature increases, liquids evaporate faster. |
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boiling point |
temperature at which liquid rapidly turns to gas |
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freezing point |
temperature at which a liquid turns to solid Freezing point of a substance is the same as the melting point |
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sublimation |
a solid changes to a gas without melting in the process Example: Dry ice |
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density |
measures how tightly matter is packed in an object |
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element |
substance that cant be further simplified |
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atom |
smallest particle that has the properties of an element |
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protons |
located in the nucleus, center of the atom |
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neutrons |
located in the nucleus, center of the atom |
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electrons |
located outside the nucleus |
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atomic number |
number of protons in an atom |
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molecule |
particle that contains more than one atom joined together |
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nonmetal |
17 elements that are poor conductors of electricity and heat ex. sulphur, carbon |
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noble gases |
nonmetallic elements are inert, do little or nothing ex. helium, neon, argon, krypton, xenon, |
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metalloids |
small group of elements that have some properties of metals and some of the nonmetals. Not as good at conducting heat and electricity, but better conductors than nonmetals. ex. boron, silicon, germanium |
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metal |
substance that conducts heat and electricity well ex. aluminum, iron, copper, gold, silver |
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periodic table of elements |
arranges all the elements in a chart of rows and columns of increasing atomic number |
