210
Question
(a) Compare the properties of solids, liquids and gases in tabular form.
(b) Give two reasons for saying that wood is a solid.
(b) Give two reasons for saying that wood is a solid.
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Solution
(a)
Property
Solid
Liquid
Gas
Packing of particles
Particles are packed very close to each other.
Particles are packed less close to each other.
Particles are packed very far from each other.
Force of attraction between the particles
Strongest
Weaker than solids.
Negligible
Shape and volume
Fixed shape and volume.
No fixed shape but fixed volume.
Neither fixed shape nor fixed volume.
Compressibility
Negligible.
Higher than solids.
Highest.
Rate of diffusion
Very low
Higher than solids.
Highest.
(b) Wood is solid because:
(i) It has a fixed shape and volume.
(ii) It cannot be compressed.
| Property | Solid | Liquid | Gas |
| Packing of particles | Particles are packed very close to each other. | Particles are packed less close to each other. | Particles are packed very far from each other. |
| Force of attraction between the particles | Strongest | Weaker than solids. | Negligible |
| Shape and volume | Fixed shape and volume. | No fixed shape but fixed volume. | Neither fixed shape nor fixed volume. |
| Compressibility | Negligible. | Higher than solids. | Highest. |
| Rate of diffusion | Very low | Higher than solids. | Highest. |
(b) Wood is solid because:
(i) It has a fixed shape and volume.
(ii) It cannot be compressed.
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