Chemistry. What Is The Diffence Between A Pure Substance And Water? How Come The Sky Looks Blue From Earth But From Outer Space The Sky Looks Black And Earth Looks Blue?

Frequently Asked Question :

Chemistry : What Is The Diffence Between A Pure Substance And Water

Also, would adding water to a pure substance increase or decrease the melting point? One more question... How would you seperate two different pure substances that are mixed together? Help? ~~~ E D ~~~

Earth Sciences Geology : How Come The Sky Looks Blue From Earth But From Outer Space The Sky Looks Black And Earth Looks Blue

I thought of this when looking of some photos taken of earth from outer space. ~~~ Sweet Cupcake ~~~

Earth Sciences Geology : What Is That Big Crack In California That Supposivley Is Going To Cause A Huge Earthquake Someday Called

I forget what its called and I want to look up images of it on google. I know a huge earthquake is supposed to happen and stuff. What is that crack called? In California? ~~~ Emma R ~~~

Biology : What Is An Example Of A Plasma Membrane And Nuclear Membrane

I have to show real-life examples of 12 organelles. I used a fence for the plasma membrane. Should I use the fence again for the nuclear membrane? PLEASE HELP ME! ~~~ Meg T ~~~

Other Science : ANyone Know Of A Good Place To Discuss Inventor Related Ideas And Post Questions

ANyone know of a good place to discuss inventor related ideas and post questions? ~~~ dragonfirezw w ~~~