MEDIUM
9th ICSE
IMPORTANT
Earn 100

Explain the following:

Ionic compounds dissolve in water whereas covalent compound do not.

Important Questions on Chemical Bonding

MEDIUM
9th ICSE
IMPORTANT

Explain the following:

Ionic compounds are usually hard crystals.

HARD
9th ICSE
IMPORTANT

Five atoms are labelled from A to E.

Atoms  Mass No. Atomic No.
A 40 20
B 19 9
C 7 3
D 16 8
E 14 7

(a) Which one of these atoms:(i) contains 7 protons (ii) has an electronic configuration 2,7?

(b) Write down the formula of the compound between C and D.

(c) Predict which are: (i) metals (ii)non-metals.

MEDIUM
9th ICSE
IMPORTANT

What is the difference between ionic compounds and polar covalent compounds?

MEDIUM
9th ICSE
IMPORTANT

What is the difference between ionic compounds and covalent compounds.

MEDIUM
9th ICSE
IMPORTANT

What is the difference between a polar covalent compound and a non-polar covalent compound.

MEDIUM
9th ICSE
IMPORTANT

Match the atomic number 4, 14, 8, 15 and 19 with the following:

A solid non-metal of valency 3.

MEDIUM
9th ICSE
IMPORTANT

Match the atomic number 4, 14, 8, 15 and 19 with the following:

A gas of valency 2.

EASY
9th ICSE
IMPORTANT

Match the atomic number 4, 14, 8, 15 and 19 with the following:

A metal of valency 1