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SAI International School

Class-X
Subject_ Chemistry
Topic- Carbon & it's Compounds
Subtopic- Mind Map with concept mapping questions

[Revision of Carbon & its compounds]

Home Assignment

A] Covalent bonding in carbon compounds

i. Definition & Types of Covalent Compounds and their Examples
1. In what form are the covalent compounds found in nature? [Molecular form /
Ionic form]
2. Why covalent compounds –
a. exists as solids/liquids/gases
b. are insoluble in water
c. have a low melting point
d. are poor conductor of electricity.

3. CO 2 is a gas & is sparingly soluble in water. What is the type of bonding found
in CO 2?

4. Which of the following compounds has a low melting point and why? Na 2O,
H 2O, K 2O, Li 2O

5. On passing electricity through solution A the bulb glows, but there is no
change when electricity is passed through solution B. Identify solution A & B
from the following- ethanol & Blue vitriol.

4-
4+
ii)Carbon atoms do not form C /C ions why?
4+
6. Why do Carbon atoms not form C ions during bond formation?

4-
7. Why do Carbon atoms not form C ions during bond formation?

8. How do C- atoms stabilise themselves while bond formation & why?

9.0 What type of bonds are formed by C- atoms when they react with other
atoms? Why?

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