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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| chemical reaction | produces new substances by changing how atoms are arranged
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| reactants | substances present when a chemical reaction starts
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| products | substances formed (produced) by a chemical reaction
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| catalyst | substance that speeds up a chemical reaction but is not consumed in the reaction
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| coefficient | the number of molecules of a substance in a chemical reaction
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| law of conservation of mass | atoms are not created or destroyed by chemical reactions
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| The CPGT Indications of a Chemical Reaction | *Color change
*formation of a Precipitate (solid product)
*formation of a Gas
*Temperature change
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| synthesis reaction | new compound is formed from the combination of simpler reactants:
A + B ---> AB
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| decomposition reaction | reactant breaks down into simpler products:
AB ---> A + B
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| combustion | chemical reaction in which a substance reacts with oxygen, usually with the rapid release of heat and the production of a flame, such as the burning of methane gas
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| single replacement reaction | during a chemical reaction, one element replaces another in a compound:
A + BC ---> AC + B
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| double replacement reaction | during a chemical reaction, two elements replace each other in different compounds:
AB + CD ---> AD + CB
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| endothermic reaction (Endo's AEDT!) | chemical reaction that Absorbs surrounding Energy producing a Decrease in Temperature of the reaction mixture:
REACTANTS + ENERGY ---> PRODUCTS
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| exothermic reaction (Exo's REIT!) | chemical reaction that Releases Energy producing an Increase in Temperature of the reaction mixture:
REACTANTS ---> PRODUCTS + ENERGY
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| The CSTC Factors that Affect the Rate of Chemical Reactions | *Concentration
*Surface size
*Temperature
*Catalyst
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| brilliant | what you are :)
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| activation energy | the minimum amount of energy needed to start a chemical reaction
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Created by:
shirleybeth
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