Elements Compounds and Mixtures
1. Which of the following is
an element , a compound or
a mixture . Give reason for answer
a. Chlorine b. sulphur c.
sea water d. CO2 e. bronze
2. Define the following
a. Molecule b. Atomicity c.
Compound
3. Name a) A diatomic element b)
Tetra atomic element c) Liquid metal d) mealleable metal e) lustrous non metal f) liquid non-metal
4. Give difference between
Mixture and Compound?
5. What is the difference
between homogeneous and heterogeneous mixture?
6. Why air is considered a mixture
7. What is a true solution?
8. Give properties of
suspension?
9. Define electrophoresis?
10.
How will you separate
a. Sulphur and carbon
b. Sand and sugar
c. Iodine and common salt
d. Naphthalene and common salt
e. Iron fillings, iodine and
sugar
11.
On what factors does the separation of mixture depends
12.
How will you separate two immiscible liquids?
13.
What do you understand by chromatography?
14.
What are metalloids? Give examples
15.
Name three metals which show exceptions to the properties of metals
