Question

Which can be inferred from the activity? (a)The contents in the bowl before heating can be classified as a mixture because they appear different. (b)The contents in the bowl before heating can be classified as a mixture because they could be separated. (c)The contents in the bowl after heating can be classified as a mixture because they were not affected by the magnet. (d)The contents in the bowl after heating can be classified as a mixture because their properties changed after heating.​

Answer 1

Answer:

The contents in the bowl before heating can be classified as a mixture because they could be separated.

Option (b) is correct.

Explanation:

• When iron filings and sulfur are mixed together, it forms a heterogenous mixture which can be separated.

• Iron and sulfur have no reacted together to form a bond before heating, therefore it is a mixture.

• But after heating both iron and sulfur react with each other and form a ferrous sulfide compound.

. Thus, this is a black color compound after heating, not a mixture.

. The reaction is

• Fe + s-> FeS

wajahatkincsem. Samaritan

Answer 2

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