Page 133 - ICSE Chemistry 6

12. Arhaan has learnt about Brownian mo on. He wants to observe this phenomenon. How can he do it?
13. Observe the given image carefully and answer the following ques ons.

(a) Label the given image. What does the image represent?
(b) Explain the various processes shown in the image.
(c) What causes the change in state of ma er?

14. Why is it so that all the three states of ma er expand on hea ng? Which state of ma er expands
enormously when heated?
15. Ketan took two beakers and dissolved one teaspoon of sugar each in both the beakers. He s rred the
contents of one beaker and did not s r the contents of the other beaker. What do you think he would
have observed? State the reason for the same.

16. Samira wants to prepare a saturated solu on of salt and water. How can she do it?

17. Name the water purifi ca on method in which potash alum is added to the water and state why potash
alum is added to water.

18. Observe the given image carefully and answer the following ques ons.

(a) Name the water purifi ca on technique represented by the image.

(b) Label the image shown.
(c) How is the process carried out?

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