Question

EXEE
1. Define the following terms:
(a) Atoms
(b) Molecules
(c) Radicals
(d) Valency
(e) Periodic table
2. Write the names of the elements present in the
following compounds.
(a) Common salt (b) Ammonia
(c) Sulphuric acid (d) Glucose
(e) Sodium hydroxide Acetic acid
3. What does each of the following represent?
(a) 200,
(b) 2H,S
(c) 5H,SO
(d) 6NaNO3
Write the symbols and valencies of the following
radicals :
fal Magnesium ion (b) Ammonium
(c) Carbonate (d) Nitrate
lej Oxide
(f) Bisulphate
(8) Aluminium ion
5. Name the following radicals :
(a) SO3
(b) HCO-
(c) OH-
(d) Cr,03​

Answer 1

Answer:

Atoms is very small tiny particles that can not be seen by naked eyes

Answer 2

1atom-the small things around us which cannot see to us called atom

molecule-the particles present in an atom

radicals -exuberance

valency - the composition of element

periodic table - the case of eleme