Question

classify the following into pure substances and mixtures

a) air b) copper c) silver d) a sugar solution e) mud f) a salt solution g) carbon dioxide h) water i) nitrogen

j) iron k) oxygen l) milk m) blood n) gold o) brass

Answer 1

(a) Air- Mixture

(b) Copper- Pure substance

(c) Silver- Pure substance

(d) sugar solution- mixture

(e) Mud- mixture

(f)- salt solution- mixture

(g) Carbon dioxide- pure substance

(h) water- pure substance

(i) nitrogen- pure substance

(j) iron- pure substance

(k) Oxygen- pure substance

(l) Milk- mixture

(m) blood- mixture

(n) gold- pure substance

(o) Brass- mixture