Heat a few crystals of an iodine in a watch gas. Collect the vapours in a jar. Keep another jar on the top of it in inverted position. Observe the colour of the vapour.

Important Questions on Properties of Matter

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8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 2

Heat a few crystals of an iodine in a watch gas. Collect the vapours in a jar. Keep another jar on the top of it in inverted position. What changes occurs in the colour of iodine vapours in the lower gas jar?

MEDIUM

8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 3

Heat a few crystals of an iodine in a watch gas. Collect the vapours in a jar. Keep another jar on the top of it in inverted position. What changes occurs in the upper gas jar?

MEDIUM

8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 4

Heat a few crystals of iodine in a watch gas. Collect the vapours in a jar. Keep another jar on top of it in an inverted position. What is the reason for the changes in the gas jars?

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8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 5

An incense stick has fragrance. But the fragrance fills the room only when the stick is lit. Why do the fragrance spreads quickly in the room when the incense stick is lit?

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8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 6

Is there any relation between temperature and diffusion?

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8th Kerala Board

IMPORTANT

Science for Class 8 - Part 1>Chapter 4 - Properties of Matter>Exercise 7>Q 7

Why does the smell of hot food spread quickly to a long distance?

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8th Kerala Board