describe an activity which demonstrates a chemical change
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Activity: Take a small quantity of silver chloride and place it in a china dish. Keep this china dish in sunlight. Observation: After some time, white silver chloride turns grey in sunlight. This occurs due to photochemical decomposition of silver chloride.
Conclusion:
Decomposition of silver chloride is a photochemical decomposition reaction
khatisiddharth1:
many changes are chemical in nature. some examples are :
which?
sorry that was an accident eg. : 1) photosynthesis 2) neutralisation reaction 3) cooking of food( all) etc.
i accidentaly hit enter to make it go to the next line
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changing of lactose into lactic acid
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