oil is lighter than water so the oil floats on the water. you can prove it by shaking a bottle with water and oil and shake it then leave it overnight then check it and you'll see why oil and water don't mix .
There is a chemical reason that oil and water cannot mix. Water is what is known as a polar molecule, meaning that one end of the molecule is positively charged, and the other is negatively charged. Oil, however, is made up of non-polar molecules and therefore does not attract the surround water molecules. Since the oil is separated from the water, eventually the oil will gather together.
They have different Viscosities which does not allow the two to mix.
Water and oil do not mix because water is a polar substance and oil is nonpolar. The general rule of solubility is like dissolves like.
Oils have nonpolar molecules and water has polar molecules.
small container
when cold and warm air are added in the same container it causes water.
The water level of the container will rise, and the total volume increases. But the volume of the water itself remains the same.
definite shape the same size
If you completely boil the water away and re-condense it it does. This is known as distillation. Water that has been boiled but mostly left in the container (as you would do for cooking) kills any microorganisms but impurities actually become more concentrated as the amount of water in the container is reduced, while the amount of impurities remains the same.
They have different Viscosities which does not allow the two to mix.
because they have the same mass when placed in water
yes because if the container is smaller it has a greater pressure than a bigger container. ;)
when ice and petrol are in same container ,ice will float on the surface of petrol, because ice is a frozen form of water .As water floats on oil it can not mix in it.
small container
About the same size as a water container.
-- Some of the air in the container is forced out, being displaced by the volume of the ruler, and being unable to occupy that same space at the same time. If there is liquid in the container, then the same goes for the liquid. -- If there is liquid in the container, then at least part of the ruler becomes wet.
Hot Water cools,though kept in a closed container,because of its surroundings.Heat escapes into the environment till the temperature of water(system) and surroundings become the same. Its simply the transfer and exchange of energy.
No, the water displaces the air if the container is open.
when cold and warm air are added in the same container it causes water.
They have the same vapor pressures.
The water level of the container will rise, and the total volume increases. But the volume of the water itself remains the same.