Solid State Physics

it would weigh around million tons

because the whole weight of matter lies in the nucleus of it

which is very small

if we take many of those nuclei it would weigh about a million tons

It has a definite volume and shape and cannot be compressed.

More information:

There are three types of matter, gas, liquid and solid. Gas matter have no definite volume, no definite shape and can be compressed. Liquid matter has a definite volume, no definite shape and cannot be compressed. Solid matter has a definite volume, a definite shape and cannot be compressed.

This is in the 'Cycles' Science subject, learnt normally at Primary/Grade 3/4 in Primary/Elementary schools.

Detailed information:

Gas:

Gas particles are very far apart from each other, mainly the reason why they can move freely everywhere.

Liquid:

Liquid particles are next to each other, they slide past each other, however, they cannot move freely, unlike gas particles.

Solid:

Solid particles are the most arranged particles of all. They can only shake a little in their current position, and cannot move around at all.

I hope this information will be helpful to you!!!:)

P.S. I am just a primary 5 student, eleven years old studying in a Singapore top primary school. My answer may not be very accurate, but all the same I hope it will help you/your child in his/her studies.

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This simplifies to APF = 0.74

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k is Boltzmann's constant

T is temperature

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