I got 2 question want to ask you guys.?

Question

Why is water described as a polar molecule? give me a brief descrition in words please.

And 2 example of each of the following
A substance that is soluble in water-

A substance that is insoluble in water-

Answer 1

water is poler b/c the hydrogen atoms bond to the oxygen words one side, giving that side a negative charge, while the opposite side has a posative one.

suger and salt r soluble in water

idk what doesn't desolve in water, sry

Answer 2

SOLUBLE

http://en.wikipedia.org/wiki/Soluble

http://en.wikipedia.org/wiki/Solvent

examples:

detergent, tea, coffee, salt all disolve in water.


medals, plastics and some oils do not disolve in water.
http://en.wikipedia.org/wiki/Insoluble

hope this helps you.




Solvents are normally characterized as polar or nonpolar. The general rule of thumb is "Like Dissolves Like." This means that polar solvents will dissolve ionic compounds and covalent compounds which ionize, while nonpolar solvents will dissolve nonpolar covalent compounds. For example, ordinary table salt, an ionic compound, will dissolve in water, but not in ethanol.