Classify the following substances into elements and compounds:
Mercury, sulphur, sugar, sand, carbon, oxygen, alcohol, iron, marble, baking soda
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Classify the following substances into elements, compounds and mixtures:
(i) air (ii) common salt (iii) iron fillings (iv) marbles (v) oxygen (vi) milk (vii) zinc (viii) bronze (ix) sand (x) water