Page 4 - Lesson Notes

Comparative Properties Of Solids, Liquids And gases.

PROPERTIES SOLIDS LIQUIDS GASES
Nature Very hard and rigid Fluid Highly fluid
Shape and volume Have definite Have definite Do not have
shape and volume. volume but not definite volume and
definite shape. shape.
Density Maximum Denser than gases Minimum density.
but less denser
than solids.
Force of attraction Very strong. In between solids Least among three.
and liquids.
Space between the Least space Space is more in Maximum space
particles between the comparison to between the
particles. gases but more particles.
than solids.
Compressibility Minimum. Very small. Highly
compressible.
Fluidity Not able to flow. Can flow. Maximum.

Conductivity:-

It the property of some materials for that heat or electricity can flow through them easily.

The materials which can conduct heat are called good conductor of heat. Similarly the
materials which can conduct electricity, they are called good conductor of electricity.
Some materials can conduct both heat and electricity.

Metals like iron, copper, aluminium, silver etc are good conductor of heat as well as
electricity. That is why utensils are generally made up of metal, they allow heat radily
and cooking will be faster.

Metals are also used for electrical appliances, as they are good conductor of electricity.

Some materials are not allow heat or electricity to pass through them, they are bad
conductor.

Wood and plastics are bad conductor. That is why they are use for the handle of
utensils, switch board etc.

Malleability:-That is the property of most of the metals that they can be beaten into thin
sheets with a hammer.

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