Question

how will you justify that the following are compounds and not elements : (a) sugar (b) water (c) iron sulphide.

Answer 1

Dear Student
Compounds are which have different atom and arranged in a definite ratio, where as element are those which are made by same type of atoms.
For sugar(C₁₂H₂₂O₁₁) three different types of atoms are there these are C,H and oxygen side by side their ratio is 12:22:11 So sugar is a compound not a element.
for water (H₂O) There are two types of atoms one is hydrogen another is oxygen and their ratio is 1:2 so water is a compound not a element.
For iron sulphide(FeS) there are two types of atoms one is iron and another one is sulphide in the ratio 1:1 so iron sulphide is a compound not element.


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