MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the characteristics of the particles of matter?

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 1
The mass per unit volume of a substance is called density (density = mass/volume). Arrange the following in order of increasing density - air, exhaust from chimneys, honey, water, chalk, cotton and iron.
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 2
Tabulate the differences in the characteristics of states of matter.
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 2
Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3

Give reason: A gas fills completely in the vessel in which it is kept.

HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3

Give reason:

A gas exerts pressure on the walls of the container.

MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3
Give reason:
A wooden table should be called a solid.
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3

Give reason:

We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.

HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 4
Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why?