- Matter is any substance that has mass and occupies space.
- Matter is composed of extremely small particles.
- Every substance is made up of tiny units called as Constituent particles, so it is the basic unit that
- makes up a larger piece of a substance or material.
- The spaces between the particles are known as interparticle spaces.
- The constituent particles of matter are held together through forces which are attractive in nature
- called as interparticle attractions.
- Strength of attraction depends on the nature of the substance and distance between particles.
- The strength of these forces determines the physical state of a substance.
- The physical state of matter depends on thermal energy.
- Thermal energy is the energy that particles of a substance have due to their motion Order of
- thermal energy will be:
- Solid<Liquid<Gases
- Potassium Permanganate in Water
- Pink colour spreads because particles are in constant motion and mix with water.
- Incense Stick Fragrance
- Fragrance spreads because gas particles move freely and mix with air.
Experiments Showing Movement of Particles:
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