Question

2. When a beam of sunlight enters a room through a window, we see tiny
particles X suspended in a gas Y which are moving rapidly in a
haphazard manner.
i. What could be particle X be?
ii.
Name the gas y
iii. What is the phenomenon exhibited by particles X known as?
iv. What is causing the movement of particles X?
What conclusion does existence of this phenomenon give us about
nature of matter?​

Answer 1

Answer:

i) dust particles

ii) air

iii) Brownian motion

iv) The fast moving air molecules are constantly heating the tiny dust particles causing them to move rapidly in a very haphazard manner.

v) The gaseous matter air is made up of very tiny particles which are constantly moving.

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