Question

10 g of iron filings and 10 g of sulphur powder was taken in a bowl. Magnet was brought near it and iron filings were picked up by the magnet. Then iron filling were heated with sulphur powder. Magnet did not attract the substance formed. The conclusion is:

Contents before heating was mixture because they appear different.

Contents before heating was mixture because they could be easily separated by magnet.

The contents after heating was mixture because it was not attracted by magnet.

The contents after heating was mixture because properties were changed.


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Answer 1

Answer:

Because sulphur is a non-metal

Explanation:

When Iron fillings are heated with sulphur it produces sulphur oxide which is non-metal in nature or say non-metallic oxide.

Hence, they will not get attract by magnet after the reaction.

Answer 2

Answer:

10 g of iron filings and 10 g of sulphur powder when taken in a bowl, the iron filings get attracted by the magnet. However, when the iron filings were heated with sulphur powder, the magnet did not attract the substance formed. The conclusion is that the contents before heating was a mixture because they could be easily separated by a magnet.

Explanation:

• When a material is combined in a way that allows the components to be separated once more, a mixture is created.
• In a mixture, the components retain their original identities.
• A compound is created when two or more constituents react chemically to create a new material.
• In a compound, the components do not retain their original individual properties.
• For instance, a combination of sulphur with iron filings was created. To separate the iron from the sulphur, all that is needed is a magnet. hence, this combination can be considered a mixture.
• On the other hand, iron and sulphur combine to form the complex iron sulphide when heated. They cannot be separated by a magnet since their individual properties have been lost and are considered a compound.

Thus, when 10 g of iron filings and 10 g of sulphur powder were taken in a bowl. The magnet was brought near it and iron filings were picked up by the magnet. Then iron filling was heated with sulphur powder. The magnet did not attract the substance formed. The conclusion is contents before heating was mixture because they could be easily separated by a magnet.

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