unit 1 test Flashcards

1
Q

physical property

A

characteristic of a substance that can be observed w/o changing the substance into another substance

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2
Q

chemical property

A

characteristic of a substance that describes its ability to change into other substances

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3
Q

endothermic reaction

A

reaction in which energy is absorbed

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4
Q

exothermic reaction

A

reacting that releases energy in the form of heat

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5
Q

chemical equation

A

short, easy way to show a chemical reaction, using symbols instead of words

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6
Q

synthesis

A

when 2 or more elements or compounds combine to make a more complex substance

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7
Q

decomposition

A

breaks down compounds into simpler products

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8
Q

activation energy

A

minimum amount of energy required to start a chemical reaction

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9
Q

matter

A

anything that has mass and takes up space

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