Properties of Matter and Structure of the Atom
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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| model | a visual, verbal, or mathematical explanation of data collected from experiments
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| technology | the practical use of scientific information
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| weight | the effect of Earth's gravitational pull on matter
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| applied research | a type of scientific investigation that is undertaken to solve a specific problem
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| accuracy | refers to how close a measured value is to an accepted value
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| precision | refers to how close a series of measurements are to one another
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| percent error | the ratio of an error to an accepted value
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| density | mass per unit volume
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| derived unit | a unit defined by a combination of base units
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| isotope | atoms of the same element with the same number of protons but different numbers of neutrons
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| cathode ray | a ray of radiation that originates from the cathode and travels to the anode of a cathode ray rube
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| mass number | the number after an element's name, representing the sum of its protons and neutrons
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| heterogeneous mixture | one that does not have a uniform composition
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| homogeneous mixture | one that has a uniform composition; is also called a solution
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Created by:
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