Q9 of 160 Page 17

Name the process by which a drop of ink spreads in a beaker of water.

The process by which a drop of ink spreads in a beaker of water is called Diffusion. The molecules in the drop of ink will diffuse through the entire beaker of water. This will result in a homogeneous solution.


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7

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?

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What is the scientific name of particles which make up matter?

 10

What is the general name of:

(a) rigid form of matter?


(b) fluid forms of matter?

 11

Out of solids, liquids and gases, which one has:

(a) Maximum movement of particles?


(b) Maximum interparticle attractions?


(c) Minimum spaces between particles?