change in state characterstic of chemical reaction examples
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Answer:
1) Evolution of gas: In many chemical reactions, one of the products is gas.
ex. Zn +H2SO4 gives ZnSO4 + H2
2) Change of colour: certain chemical reactions are characterized by a change in the colour of the reactants.
ex. Fe + CuSO4 gives FeSO4+ Cu
3) Formation of precipitate: certain chemical reactions are characterized by the formation of insoluble solid substances called precipitate.
ex. AgNO3+ NaCl gives AgCl+ NaNO3
4)Change of state: in many chemical reactions, a change of state is observed. the reactions might start with gaseous or liquid reactants and end up with solid products, and vice versa.
ex.C+2S gives CS21) Evolution of gas: In many chemical reactions, one of the products is gas.
ex. Zn +H2SO4 gives ZnSO4 + H2
2) Change of colour: certain chemical reactions are characterized by a change in the colour of the reactants.
ex. Fe + CuSO4 gives FeSO4+ Cu
3) Formation of precipitate: certain chemical reactions are characterized by the formation of insoluble solid substances called precipitate.
ex. AgNO3+ NaCl gives AgCl+ NaNO3
4)Change of state: in many chemical reactions, a change of state is observed. the reactions might start with gaseous or liquid reactants and end up with solid products, and vice versa.
ex.C+2S gives CS2
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