What are the differences between these things?

1. substance vs. mixture
2. homogeneous vs. heterogeneous
3. solute vs. solvent
4. saturated vs. supersaturated
5. concentrated vs. dilute
6. element vs. compound
7. aqueous solution vs. universal solvent
8. soluble vs. insoluable

4 answers

All of these are standard definitions. Each may take a page to explain fully since we don't know where you are in the understanding process. Please look these up in your text or notes, then tell us what you don't understand about each and perhaps we can help you through them. Note the spelling of 8 is soluble vs insoluble.
You can also look many of these terms up in a hardbound or online dictionary, or even search on the Internet.

I searched Google under the key words "substance mixture difference" to get these possible sources:

http://wiki.answers.com/Q/How_is_a_substance_different_from_a_mixture
http://en.wikipedia.org/wiki/Chemical

You can do similar searches for the other concepts.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps a little more. Thanks for asking.
thanks
what are the solvent and solute in a solution containing 100g of ethanol and 3g of sucrose