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Chemicals react and produce pure new substances | Chemical Compounds | Chemistry

By March 9, 2017Uncategorized

 Mix iron filings and sulphur powder in a 5:3 weight ratio in a pestle and grind the mixture. Next, test the mixture for magnetism. Despite being thoroughly mixed, …

 Mix iron filings and sulphur powder in a 5:3 weight ratio in a pestle and grind the mixture. Next, test the mixture for magnetism. Despite being thoroughly mixed, the iron retains its “ironness” and is still attracted to magnet and can be separated from the mixture.. Now heat the mixture under a strong flame until a reaction occurs and the black powder of iron sulphide is formed. This time a test for magnetism draws a blank and we cannot separate the iron present in the iron sulphide. This is because the black iron sulphide is a new substance with its own properties. Thus, we see that chemical reactions produce new substances with properties of their own which may be different from the properties of the original components.

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