give four important characteristics of chemical reaction
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1)Evolution of gas. Some chemical reactions are characterised by the evolution of gas. ...
2)Formation of precipitate. Some chemical reactions are characterised by the formation of precipitate. ...
3)Change in colour. Some chemical reactions are characterised by change in colour. ...
4)Change in temperature. ...
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The important characteristics of chemical reactions are:
Evolution of a gas.
Formation of a precipitate.
Change in colour.
Change in temperature.
Change in state.
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Evolution of a gas.
Formation of a precipitate.
Change in colour.
Change in temperature.
Change in state.
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