Question

Q1) Explain:- "when an incense stick in lighted in the corner of a room, it's fragrance spreads quickly in the entire room

Q2) State the two characteristics of matter demonstrated by
a) Diffusion b) Brownian motion

Q3 Define matter with examples?

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Answer 1

Answer:

1) When an incense stick is lighted in one corner of a room, its fragrance spreads in the whole roon quickly because the particles were mixes with the space present in the air and as the air moves the particles also move and room is full of fragrance

2) a) Diffusion is nothing but the movement of molecules from it's higher concentration to loyer concentration

b) The zig-zag movement of small particles suspended in a liquid or a gads is called Brownian motion. Brownian motion tells us that the particles are tiny nature and the particles of a matter are constantly moving

3) Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton and the neutron.

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Answer 2

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1) When incense stick is lighted in the corner of a room , it's fragrance spreads quickly in the entire room because on heating the kinetic energy increases . Therefore , as the incense stick is lit the particles moves faster in the air as kinetic energy increases on heating .

2) Diffusion: Diffusion is nothing but the movement of molecules from it's higher concentration to loyer concentration. ... Brownian motion tells us that the particles are tiny nature and the particles of a matter are constantly moving.

3) Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton and the neutron. Combinations of these particles form atoms.