Question

Classify the following into elements, compounds and mixtures. 

(a) Sodium 

(b) Soil 

(c) Sugar solution 

(d) Silver 

(e) Calcium carbonate 

(f) Tin (g) Silicon 

(h) Coal 

(i) Air 

(j) Soap 

(k) Methane 

(l) Carbon dioxide (m) Blood

Answer 1

Elements - sodium, silver, tin, silicon. 

Compounds - calcium carbonate, methane, carbon dioxide. 

Mixtures - soil, sugar solution, coal, air, soap, blood.