Question

Classify the following substances into elements, compounds and mixtures: 

(i) Milk 

(ii) 22-carat gold 

(iii) Iodized table salt 

(iv) Diamond 

(v) Smoke 

(vi) Steel 

(vii) Brass 

(viii) Dry ice 

(ix) Mercury 

(x) Air 

(xi) Aerated drinks 

(xii) Glucose 

(xiii) Petrol/Diesel/Kerosene oil 

(xiv) Steam 

(xv) Cloud.

Answer 1

Element – (iv), (ix); 

Compounds – (viii), (xii), (xiv), (xv); 

Mixtures – (i), (ii), (iii), (v), (vi), (vii), (x), (xi), (xiii).