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28 Cards in this Set
- Front
- Back
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Accuracy
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A decription of how close a measurement is to the true value.
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Controled Variable
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Stays the same during the experiemnt.
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Critical Thinking
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Using logic to solve problems.
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Law
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A proven fact of science.
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Length
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The measure of a straight line.
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Mass
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The amount of matter in an object.
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Variable
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Changes in an experiment.
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Theory
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Explains an idea in science that hasn't been proven.
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Technology
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The application of science for practical puposes to meet human needs.
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Scientific Method
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A series of steps followed to answer a question.
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Science
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Discovering facts by observing natural events and conditions.
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Standard Units of Measurement
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Units of measurement that every scientist uses.
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Weight
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The gravitational pull on an object.
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Scientific Notation
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A way of simplifying large numbers.
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Precision
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The exactness of a measurement.
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Significant Figures
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A prescribed decimal place that determines the amount of rounding off to be done. Based on the precision of the measurement.
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Matter
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Everything that has mass.
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Element
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One of a class of substances that cannot be separated into simpler substances by chemical means.
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Atom
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The smallest part of an element that still contains the elements properties.
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Molecule
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the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
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Compound
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a pure substance composed of two or more elements whose composition is constant.
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Mixture
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Two substances physically combined.
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Physical Change
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Doesn't change the chemical properties.
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Chemical Change
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Changes the chemical properties. (Burning, fizzing)
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Reactivity
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Measure of the change from the condition at which a nuclear reactor is critical.
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Density
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Mass per unit volume.
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Melting Point
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Temp. at which solids become liquids.
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Boiling Point
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Temp. at which liquids become solids.
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