Question
A sponge can be compressed. Is it solid or not? Why?
✓
Answer
Sponge is a solid. This is because it has a definite volume and a definite shape.
It changes its shape only, when an external force is applied.
We can see that there are several minute or small holes in a sponge.
In these holes, air is trapped. That's why when we press it the air trapped in the holes comes out.
Solids are generally less compressible.
But, in this case, when force is not applied, sponge comes back to its original shape.
Hence, it is considered as a solid.
It changes its shape only, when an external force is applied.
We can see that there are several minute or small holes in a sponge.
In these holes, air is trapped. That's why when we press it the air trapped in the holes comes out.
Solids are generally less compressible.
But, in this case, when force is not applied, sponge comes back to its original shape.
Hence, it is considered as a solid.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide:
Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
Explain why, a small volume of water in a kettle can fill a kitchen with steam.
How many moles of O2 are there in 1.20 × 1022 oxygen molecules?
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
Which of the following are physical changes and which are chemical changes?
- Burning of a magnesium wire.
- Freezing of water.
- Rusting of iron.
- Glowing of an electric bulb.
Write the electronic configuration of any one pair of isotopes and isobars.
Honey is more viscous than water. Can you suggest why?
Give the evidence for the existence of nucleus in an atom.