chemical reactions
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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| decomposition Reaction | a compound breaks down into simpler substances
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| activation energy | what is needed to start a chemical reaction
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| arrow | yields
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| characteristics of a chemical reaction | changes in energy or changes in properties (produce a gas) (bubbles form) theirs color change
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| chemical changes | alter the chemical properties of matter
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| chemical equations | a shorter and easier way to show chemical reactions
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| coefficient | a number placed in front of a number
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| conservation of mass | the amount of matter involved in a chemical reaction does not change the total mass
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| endothermic reaction | is an observable change in energy
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| exothermic reaction | is an observable change in energy that shows a chemical reaction took place
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| physical change | alter only the physical properties of matter which means no new substances were formed
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| preipitate | a solid that form"s from solution during a chemical reaction
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| product | the materials you have after a chemical reaction
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| reactants | the materials you have after a chemical reaction at the begining
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| replacement reaction | one part of a compound
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| state of matter | solid liquid gas
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