abby162
abby162
28-11-2016
Chemistry
contestada
4 signs of a chemical change
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TeamBrainHelper
TeamBrainHelper
28-11-2016
There are four signs that a chemical reaction has occurred: a change in color, a change in temperature, formation of a gas or formation of a precipitate. A precipitate is a solid that forms when two liquid solutions are mixed.
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dave152
dave152
28-11-2016
change in color
change of temperature
formation of a gas
formation of precipitation
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