Vocab Words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| chemical bond | The force that holds two atoms together.
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| molecule | A particle made of two or more atoms bonded together.
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| compound | A pure substance made of two or more elements chemically combined.
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| chemical formula | A formula that gives the elements in a compound and the ratio of atoms.
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| mixture | Two or more substances that are mixed together but not chemically combined.
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| heterogeneous mixture | A mixture in which pure substances are unevenly distributed throughout the mixture.
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| homogeneous mixture | A mixture in which substances are evenly distributed throughout the mixture.
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| solution | An example of a homogeneous mixture; forms when substances dissolve.
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| weight | A measure 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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| International System of Units | The system of units (SI) used by scientists to measure the properties of matter.
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| volume | The amount of space that matter occupies.
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| density | The measurement of how much mass of a substance is contained in a given volume.
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| physical change | A change in a substance that does not change its identity.
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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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