..The States of Matter
The molecules in a solid are very closely packed. The inter-molecular force of attraction is very strong in solids. Hence solids have a definite size and shape. Molecules of a solid vibrate about their mean positio..
Properties of Matter
A solid has certain characteristics: According to modern theory, the molecules of a solid are fixed in relation to each other. They vibrate in place, but do not wander around. This accounts for the fact that a solid keeps its own shape. Solids are usually crystalline. A solid is a crystalline subst..
Composition of Matter
Intensive investigation by scientists over the years led to the development of a mental model (the minuscule particles couldn't be actually seen at that time) known as 'dynamic particle model..
Composition and Nature of Matter
Matter In Our Surroundings - Composition of Matter..
See what our Users say :
Tutor teaches awesome. very simple and clear, I think I have learnt a lot in todays session. I shall get all my friends to this site.
It was very helpful to get answers to the questions that I needed in a timely fashion. Very helpful.- kim