ASSIGNMENT - 8
CLASS – IX


Q.1. Which of the following are pure substances:
         Milk, Iron, Hydrochloric acid, Mercury, Wood, Air.

Q.2. What are two types of pure substance. Give one example of each type?

Q.3. What is the other name for impure substance. Give two examples.

Q.4. Classify the following as elements or compounds:- Iron, Sulphur, Washing
soda, Sodium, chalk.

Q.5. What do you mean by Homogenous and Heterogeneous mixture. Give two
examples of each.


Q.6. Differentiate b/w mixture & compound.