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Properties of molecules
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oxygen and nitrogen have ..............volume and ......shape.
indefinite shape and indefinite volume.
They take the shape of the container and have definite volume.
liquids
They have definite shape and definite volume.(..................)
solids
They are spaces that found among the molecules.(...........................)
inter molecular spaces
When you leave the perfume bottle opened you smell it all over the room.why?
Because, the perfume consists of molecules carrying its properties and are in a continuous motion.
The solid substances keep their shape whatever the container shape differs , while the liquid takes the shape of its container.
because, in solid the inter molecular forces are very strong and has tiny spaces while in liquid ,the inter molecular forces are weak and has large spaces.
It is easy to divide an amount of water into small droplets or cups.why?
because, the inter molecular forces between water or liquid molecules are weak and the inter molecular spaces are intermediate.
It is very hard to fragmentize a piece of iron with your fingers. why?
Because, the inter molecular forces between solid molecules of solid are very large.
The volume of mixture of water with alcohol is less than the sum of their volumes before being mixed together.
Because, the alcohol molecules spreed in the inter molecular spaces between water molecules.
G.R.F: When adding an amount of table salt to water it disappears after a tim
because, molecules of salt spread in the inter molecular spaces between water molecules or because , molecules are in a continuous motion
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