Unit - 3.2 Pure Substance, Mixture and Compound — CHEMISTRY STD 7 — Question
ICSE BoardEnglish MediumSTD 7CHEMISTRYUnit - 3.2 Pure Substance, Mixture and Compound1 Mark
Question
Describe an experiment using which it can be proved that compounds do not retain properties of their constituents.
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Answer
Take a small amount of mixture of iron and sulphur and roll a bar magnet in it. It is noticed that grey particles of iron cling to the magnet and yellow particles of sulphur left behind. Now roll the magnet in the powdered iron sulphide compound. It is noticed that no iron particles cling to the magnet. Thus, we can conclude that, constituents of a mixture can be separated by physical means, but the constituents of a compound cannot be separated by physical means
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