Sand Grain

i just have a point to ask about...:

how in the world.... did u know it "feels oily"???!!!

i mean, if u actually did touch it, u cant be typing here

If you noticed that before, you might have seen the small "strips" on the minutes and hours arm on a desktop clock. The effect, Phosphorescence, is emmiting some of the energy absorbed before, and so if you keep the clock in a well lit room and then turn off the light, you'll see these tiny strips glow in the dark!

If this is somehow implemented in a wallpaint, you would be able to see the walls of your room glow at night, and you won't bump into them when walking! (That's true if you prefer turning off all the lights in your house before you sleep )

Radioactivity is a bad choice, you're talking about cancer and mental illness if this were to be real.

So if white phosphorus was somehow "dissolved" or "mixed in" with a paint, the painted surface would glow for a short time after the lights go out. Chemilumicsence wouldnt last for long, as the Phosphorus actually gets oxidized irreversibly.

bump (=

Well I don't even have the equipment to attempt the experiment, so dont mind warning me

However i do know HF's a lab-only chemical, and with lab-only i dont mean a homelab or a school lab (=

Just to clarify my "level of expertise", I'm a tenth grader doing an IGCSE in chemistry, so the Gibbs constant and other langrangian constants are far higher than my level.

I reached this method by pure theory and a curiousity to know whether this is the industrial method or not. It all came out when I compared the close structural formulae of Na3Al(OH)6 and Na3AlF6, and I browsed many websites in a quest to find if HF is used in preparing synthetical cryolite, and I found some info on wikipedia (not a really recommended source though) and some other chemistry sites which said HF is actually used:

http://en.wikipedia....drofluoric_acid look under the "production of fluorides" section.

Anyway that was one nice suggestion, and thanks for your replies (=

EDIT: I think your suggested sodium salt is sodium fluride:

AlF3 + 3NaF = Na3AlF6

I worked out a method for making Cryolite with easily available home chemicals (though I never tried it, and I don't recommend so), namely:

1) Sodium Hydroxide.

2) Any Aluminium Compound

3) Not really "easily" available: an adequate supply of hydrofluoric acid (HF)

The method should go on like this:

1) Aluminium Compound + NaOH => Al(OH)3 +.....

2) Al(OH)3 + 3NaOH => Na3Al(OH)6

3) Na3Al(OH)6 + 6HF => Na3AlF6 +6H2O.

Any viewpoints are accepted, it's just a question