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19 Cards in this Set
- Front
- Back
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Chemical Change |
Change in the whole matter |
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Signs of Chemical Reactions |
Bubbles, Color Change, Temperature change, Light, precipitation |
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Chemical Equation |
Shorthand representation of a chemical change |
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Reactants |
Beginning substances |
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Products |
Results - what is produced |
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Arrow |
Yields, makes, or produces |
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Subscript |
small #s or letters written below the line |
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s |
solid |
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l |
liquid |
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g or up arrow |
gas |
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ppt or down arrow |
precipitate |
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aq |
aqueous/dissolved in water (distilled water) |
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triangle |
heat |
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Law of Conservation of Matter |
Matter cannot be created or destroyed |
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Coefficient |
Big number that is used to balance equations to tell the number of units |
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Balancing tips |
take polyatomic ions as a whole Balance individual atoms last write H20 as H(OH) leave oxygen for last do off ratios first (3:2) when have hydrocarbon C_H_burning (+0s)if subscript on C is even, put a 2 coefficient in front. |
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Rates of reactions |
speed of rate |
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Dependent upon |
Collision rate |
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rates of reactions are dependent upon: |
temperature stir/shake concentration size (surface area) catalyst/inhibitor |
