Water is a polar molecule and has partial positive and negative charges at either end. Oils are usually long hydrocarbon chains, which consist of Hydrogen and Carbon atoms. Hydrocarbons are generally non-polar and have no charge, therefore they cannot attract water. Water is attracted to itself as it has charges and oils are attracted to itself because of intermollecular forces. particles need to be able to intertwine in order to be "mixed", therefore oil and water remain separate.
some of the substances in oal sink and contaminate the lake or sea bed. The oil at the top can be removed by using the floting technique but it's really time consuming, costly and usually only partly succesful
Oil and water separate because oil is less dense than water. Because of this density, oil is 'lighter' than water, and floats on top of it.
Because it is
IDEA I've never mixed them (and don't see why I should), but since Vaseline is petroleum based, you may be able to add water, dissolve the sugar, let the water and oil separate, and then boil off the water.
They get mixed up. But consider a bucket of gravel - all the sized are mixed up, but can be simply sorted again if one wishes. But once they are subject to chemical action - by adding cement and water - we now have concrete. From which is much more difficult to separate the constituents.
You can separate water from alcohol by fractional distillation. By heating the mixture to the right temperature, the alcohol will evaporate and leave the water behind. However, alcohols and water are quite difficult to separate completely, and the separation will not be 100% by this method.
Sand and water can be separated by Filtration.
Boiling off the water from a salt solution will separate the solid salt and water (which can be collected by a condenser).
You cant
through filtration
oil
They would separate out because they have different densities.
Its not difficult (it happens automatically), its just tedious since they're both liquids.
set the mixture out in the sun and let the water evaporate leaving the sand
Let stand over time the oil will rise to the top
The oil and water will separate into two layers with oil as the top layer.
immiscible. i got this answer from my chemistry test.
If you let the oil and water sit for a while, you can actually see the two separate. It's quite cool.
they will separate
Each layer is a phase.