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Physical Science: Essential Terms 2

Physical Science: Essential Terms 2

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Tags: science   ela   rst.9-10.4   rst.11-12.4   high school   hs-ps1-2   ngss   ps1-2   middle school   hs-ls1-1   ls1   ms  

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separation
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division of components of a mixture into separate substances
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density
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a substance's mass per unit volume
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filter
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to separate solids from liquids
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reaction rate
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the speed of a reaction
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catalyst
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a substance that speeds up a chemical reaction
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reactant
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a substance that undergoes change in a reaction
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product
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substance that forms during chemical reactions when reagents are consumed
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chemical energy
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potential of a substance to undergo a transformation
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exothermic reaction
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chemical reaction that releases energy in the form of light or heat
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endothermic reaction
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chemical reaction that absorbs energy in the form of light or heat
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conservation of energy
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energy can neither be created or destroyed, only changed over time
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chemical reaction
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process that leads to the transformation of one set of chemical substances to another
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atom
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basic unit of matter made up of a nucleus & negatively charged electrons
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bond
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attraction between atoms
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compound
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chemical substance made up of two or more elements
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electron
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subatomic particle with negative electric charge
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nucleus
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dense region of protons and neutrons at the center of an atom
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