how can we tell if a chemical reaction has taken place in a change
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Answered by
5
Answer:
After mixing two substances physically or chemically, if there is a new product obtained which is different from the ones used to produce it,then a chemical reaction has taken place
Eg: rusting of iron- chemical reaction
product is rust
Answered by
1
Answer:
i) CHANGE IN COLOURS
ii) CHANGE IN ODOUR
iii) CHANGE IN TEMPERATURE
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