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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| activation energy | what is needed to start a chemical reaction
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| arrow | you read the arrows as yields in a chemical equation or formula
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| characteristics of a chemical reactions | changes in energy or changes in properties color change precipitate forms or temperature.
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| chemical changes | alter the chemical properties of matter
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| chemical equations | a shorter easier way to show chemical reactions by using symbols instead of words
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| coefficient | a number placed in front of a chemical formula in a equation
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| conservation of mass | the amount of matter involved in a chemical reaction that does not change
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| decomposition reaction | a compound breaks down into simpler substances
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| endothermic reaction | an observable change in energy that shows a chemical reaction took place
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| exothermic reaction | an observable change in energy that shows that a chemical reaction took place gives of energy makes it feel warmer
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| physical changes | alter only physical properties of matter no new substances are formed
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| precipitate | a solid that forms from a solution during a chemical reaction. observable changes that show a chemical reaction took place
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| products | the materials you have after a chemical reaction
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| reactants | the materials you have at the beginning of a chemical reaction
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| replacement reaction | one part of a compound is displaced by an element or compound from another substance.
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| states of matter | solid liquid gas
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| subscripts | show the number of atoms of an element in a molecule or the ratio of elements in a compound
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| synthesis reaction | two substances combine to form a new coumpound
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Or sort by any of the columns using the down arrow next to any column heading.
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