MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is meant by change of state?

Important Questions on Matter in Our Surroundings

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 7

How is the kinetic energy of the constituent particles of matter affected by change in temperature?

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 8

How do solids, liquids, and gases differ in shape and volume?

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 9

What will be the change of state when the following substances are heated?

a. ice

b. iodine

c. wax

d. water

e. ammonium chloride

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 10

Define the terms:

a. melting point

b. boiling point.

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 11
Under what conditions do a substance not exhibit any change in temperature even when it is heated?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 12
Define the latent heat of vaporisation of water. Give its value
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 13

Define the latent heat of fusion of ice. Give its value.

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>CHECK YOUR PROGRESS>Q 14
Is evaporation an endothermic or exothermic process? Give one example to support your answer.