Kaysons Publication
- Books Name
- Kaysons Academy Chemistry Foundation Book
- Publication
- Kaysons Publication
- Course
- JEE
- Subject
- Chemistry
Chapter:- 1
Matter in Our Surroundings
Matter in Our Surroundings
What We Learn in Day 1
- Matter in Our Surroundings
- Matter is made of Particles
- Evidence for particles in Matter
The process of dissolving sugar in water gives us two conclusions about the nature of matter
The existence of Brownian motion gives us two conclusions about the nature of matter
Characteristics of Particles of Matter
Matter in Our Surroundings Anything which occupies space and has mass is called matter.
Matter is made of Particles
The particles which make up matter are atoms or molecules.
Evidence for particles in Matter
This movement of different particles among each other (on their own), so that they become mixed uniformly, is called diffusion. When sugar is added to water and stirred, it dissolves quickly.
When sugar dissolves sugar particles go into the spaces between the particles of water
When KMno4 dissolves KMno4 particles go into the spaces between the particles of water
The process of dissolving sugar in water gives us two conclusions about the nature of matter
- That matter is made up of tiny particles, and
- That the particles of matter are constantly moving.
The existence of Brownian motion gives us two conclusions about the nature of matter
- That matter is made up of tiny particles, and
- That the particles of matter are constantly moving.
The zig – zag movement of the small particles suspended in a liquid (or gas) is called Brownian motion. Brownian motion increases on increasing the temperature.
Characteristics of Particles of Matter
- They are very small.
- They have spaces between them.
- They are constantly moving.
- They attract each other
