Chemistry
State what is meant by the term – chemical formula. Give the chemical formula of –
(a) sodium hydroxide
(b) sodium nitrate
(c) sodium bicarbonate
(d) sodium sulphite
(e) magnesium nitrate
(f) ammonium sulphate
(g) carbonic acid
(h) calcium phosphate
Related Questions
Give the symbol and valency of the following elements and radicals.
(a) Potassium
(b) Sodium
(c) Hydrogen
(d) Calcium
(e) Aluminum
(f) Magnesium
(g) Zinc
(h) Chlorine [chloride]
(i) Sulphur [sulphide]
(j) Nitrogen [nitride]
(k) Oxygen [oxide]
(l) Ammonium
(m) Bicarbonate
(n) Nitrate
(o) Bisulphate
(p) Bisulphite
(q) Hydroxide
(r) Carbonate
(s) Sulphate
(t) Sulphite
Give an example of three elements exhibiting variable valency.
'Dilute hydrochloric acid is added to sodium hydroxide'. Give a word equation and a molecular equation of the same. Is the equation written, a balanced equation. Give reasons.
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.