Question

A teacher mixed iron fillings with sulphur on a metal tray . She heated the mixture . Sulphur is yellow .iron fillings are grey . When the mixture was cooled , a black solid substance called iron sulphide was left .
a) write one reason why you can say that a chemical reaction has taken place .
b) write the type of the chemicals - iron , sulphur and iron Sulphide- involved in this reaction from the boxes given below .

Metallic element. Mixture. Non metallic element Compound

Answer 1

Answer:

iron and sulpher on heating forms iron sulphide which is greyish black in color

Explanation:

answer of second part is compound

this answer is confirmed

Answer 2

A) It is said that a chemical change has taken place because when u heat the mixture it melts and forms a completely different substance which is called iron sulphide.

B) iron sulphuric and iron sulphide are heated to form a compound.

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