what the sign of chemical reactions
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Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.
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Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas.
Formation of a Precipitate.
Color Change.
Temperature Change.
Production of Light.
Volume Change.
Change in Smell or Taste.
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