state the characteristic of chemical reaction
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The characteristics are: - • IT IS A PERMANENT CHANGE • IT IS IRREVERSIBLE • IN THIS CHANGE THE MASS DOES ALTER • IN THIS CHANGE ENERGY IS ABSORBED OR GIVEN OUT • EX. BURNING OF PAPER, RUSTING OF IRON CHEER
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If an observable change in temperature occurs, it is a sign that that a chemical reaction may have occurred. Formation of a precipitate is a characteristic of many chemical reactions. Precipitates are solids which may form in solutions or in other solids during chemical reactions.
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