Question

(i) What is meant by the term chemical formula?
(ii) Write down the names of compounds represented by the following formulae:
(i) CaCl2 (ii) K2SO4 (iii) KNO3 (iv) CaCO3.​

Answer 1

Explanation:

(i) CaCl2

Calcium chloride

(ii) K2SO4

Potassium sulphate

(iii) KNO3

Potassium nitrate

(iv) CaCO3

Calcium carbonate

Answer 2

Answer:

i)A chemical formula is a notation used by scientists to show the number and type of atoms present in a molecule, using the atomic symbols and numerical subscripts. ... In a chemical formula, the letters represent the atomic symbol of each atom.

ii) i) calcium and chlorine

ii) potassium and sulphur

iii) potassium and nitrogen

ivl calcium, carbon and oxygen