HARD
4th CBSE
IMPORTANT
Earn 100

Differentiate between soluble substances and insoluble substances.

Important Questions on Matter

MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Assessment Zone>Q D
Why liquids can flow but solids cannot?
MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Assessment Zone>Q D
How do solids differ from gases?
HARD
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Assessment Zone>Q D
Describe how one state of matter can be changed to another taking water as an example.
MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Assessment Zone>Q D

Give reasons for the following:

A gas cannot be stored in an open jar.

EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Assessment Zone>Q D
Give reasons for the following:
The volume of water does not change when sugar is dissolved in it.
MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>HOTS and PSA Zone

Complete the following table.

 

State Add New State Process
Solid +heat ? ?
Liquid +heat ? ?
gas +cold ? ?
liquid +cold ? ?
MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Quest Zone
Take a dry sponge. Put it in a dish of water and squeeze it underwater. You can see bubbles coming out. What are these bubbles? Where are they coming from? Sponge is supposed to be solid. How do you then manage to squeeze it? Try to find out the reason for this.
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 13 - Matter>Subject Connect>Q 1

The melting points of a few things are given in the table below.

Chocolate Wax Ice sticks Aluminium
32°C 45 °C 0 °C 660 °C

Answer the following questions using the information from the table. Chocolate turns soft and sticky in summer but not in winter. Why?