While doing experiment on studying difference between mixture and compound ,when the mixture of iron and sulphur was heated strongly it is observed that
(a) Iron melts
(b) Sulphur melts
(c)Mixture becomes red-hot
(d)Strong effervescence takes place
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Answer:
The answer is mixture heats and both melt
Explanation:
When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S. Therefore, heating of mixture of iron and sulphur powder is a chemical change.
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