Chapter: 1
Matter in Our Surroundings
( Detailed Notes with Tables, Flowcharts, Diagrams, and Key Points )
1. Introduction to Matter
Matter - is anything that has mass and occupies space.
Everything around us like air, water, stones, plants, animals, etc., is
made up of matter.
Early Indian philosophers described matter as Panch Tatva — air,
earth, fire, sky, and water.
Modern classification: Based on 2
physical properties chemical
properties
(only physical in this chapter).
, 2. Physical Nature of Matter
2.1 Matter is Made up of Particles
Matter is not continuous but made of tiny particles.
Activity 1.1 shows that salt or sugar dissolves in water and spreads
throughout, proving the particle nature.
2.2 How Small are These Particles?
Activity 1.2: Dilution of potassium permanganate solution proves
particles are extremely small and keep dividing.
3. Characteristics of Particles of Matter
3.1 Particles Have Space Between Them
Activity 1.1 and 1.2: Sugar and salt dissolve in water, proving the presence
of inter-particle spaces.
3.2 Particles are Continuously Moving
Activity 1.3 to 1.5: Diffusion of ink, Dettol, or incense stick proves particle
motion.
Heating increases particle motion due to increased kinetic energy.
3.3 Particles Attract Each Other
Activity 1.6 to 1.8: Demonstrates different degrees of force of attraction in
solids, liquids, and gases.
Matter in Our Surroundings
( Detailed Notes with Tables, Flowcharts, Diagrams, and Key Points )
1. Introduction to Matter
Matter - is anything that has mass and occupies space.
Everything around us like air, water, stones, plants, animals, etc., is
made up of matter.
Early Indian philosophers described matter as Panch Tatva — air,
earth, fire, sky, and water.
Modern classification: Based on 2
physical properties chemical
properties
(only physical in this chapter).
, 2. Physical Nature of Matter
2.1 Matter is Made up of Particles
Matter is not continuous but made of tiny particles.
Activity 1.1 shows that salt or sugar dissolves in water and spreads
throughout, proving the particle nature.
2.2 How Small are These Particles?
Activity 1.2: Dilution of potassium permanganate solution proves
particles are extremely small and keep dividing.
3. Characteristics of Particles of Matter
3.1 Particles Have Space Between Them
Activity 1.1 and 1.2: Sugar and salt dissolve in water, proving the presence
of inter-particle spaces.
3.2 Particles are Continuously Moving
Activity 1.3 to 1.5: Diffusion of ink, Dettol, or incense stick proves particle
motion.
Heating increases particle motion due to increased kinetic energy.
3.3 Particles Attract Each Other
Activity 1.6 to 1.8: Demonstrates different degrees of force of attraction in
solids, liquids, and gases.
