If we look around, everything we see is matter from books, pens, and pencils to we humans ourselves all matter. The matter is anything that has mass and occupies some space. We can further divide matter into pure and impure substances. A pure substance is made up of only one kind of particle while an impure substance is composed of more than one kind of particle. Gold, silver and copper are examples of pure substances, while air, seawater and petrol are examples of impure substances.
Download Class 9 Chemistry Worksheet on Chapter 2 Is Matter Around Us Pure Set 2 PDF
CBSE Class 9 Chemistry Chapter 2 Is Matter Around Us Pure Worksheet – Set 2
Q1. Saltwater is an example of
(a) Physical change
(b) Chemical change
(c ) Both (a) and (b)
(d) None of the above
Q2. Brass is composed of ______ and ______.
(a) Copper and sulphur
(b) Copper and zinc
(c ) Zinc and sulphur
(d) None of the above
Q3. Rusting iron is an example of ______.
(a) Chemical change
(b) Physical change
(c ) Both (a) and (b)
(d) None of the above
Q4. Which of the following is a lustrous non-metal?
(a) Carbon
(b) Iodine
(c ) Bromine
(d) None of the above
Q5. Which of the following non-metal shows allotropy?
(a) Sulphur
(b) Phosphorous
(c ) Carbon
(d) All of the above
Q6. What is the base of solution classification into diluted, concentrated or saturated?
Q7. What is the primary difference between a true and colloidal solution?
Q8. Name a technique that can be used to separate liquids whose difference in boiling points is 27° C?
Q9. Why is crystallisation preferred over simple evaporation for the separation of substances?
Q10. Name a separatory technique that can be employed to separate camphor from salt.
Q11. Give an example of a solid-solid solution.
Q12. What are the applications of centrifugation?
Q13. Seawater can be homogeneous and heterogeneous. Justify the statement.
Q14. What will happen if aqueous sugar water is heated to dryness?
Q15. What is the primary difference between smoke and fog?
Q16. Calculate the mass by mass percentage of a solution containing 60 g sugar in 480 g water.
Q17. What will you observe if 12 mL of Dettol is added to 500 mL of water?
Q18. What is a saturated solution? How can you convert a saturated solution to an unsaturated solution?
Q19. What do you understand by the term chromatography? Explain its uses.
Q20. How will you differentiate sol, solution and suspension?
Download the PDF to access answers to the Chemistry Worksheet for Class 9 Chemistry Chapter 2 Is Matter Around Us Pure Set – 2
Download PDF
Read Also:
- Is Matter around us Pure Questions
- Is Matter Around us Pure?
- Mixtures
- Solution – Properties of Solution
- Methods of Separation
- Difference Between Physical and Chemical Change
- Chemistry Concept Questions and Answers
- Class 9 Chemistry Chapter 2 Is Matter Around Us Pure? MCQs
- Class 9 Chemistry Chapter 2 – Is Matter Around Us Pure Important Questions with Answers
Recommended Videos
CBSE Class 9 Science | Is Matter Around us Pure? (Chapter 2) | NCERT Exemplar Solutions
