for all you chem fanatics (or people who just know their shit) - Page 2

touch me i'm sick · 03.17.2008, 07:12 PM

oh my goodness, this is really something. and quite impossible for me to do in a high school lab

!@#$%! · 03.17.2008, 07:20 PM

Quote:

Originally Posted by touch me i'm sick

oh my goodness, this is really something. and quite impossible for me to do in a high school lab

aggghhhhhhhhhhhh

schizophrenicroom · 03.17.2008, 07:22 PM

gotta love ib!

m1rr0r dash · 03.17.2008, 07:31 PM

for serious, though... i've recently been curious about pigment chemistry since i've been painting more.

for example "payne's gray" is a mix of amorphous carbon (lamp black - traditionally soot) and complex sodium alumino-silicate containing sulphur (aka french ultramarine) ... i realized i could get better result by buying the individual paints and mixing them on the canvas than with pre-mixed paints.

the same is true of "yellow ochre" - cheap versions of this color typically contain multiple iron oxides and are cut with titanium oxide. i never really thought it made much difference until i did a side be side comparison, but paints containing a single, more-highly refined iron oxide have noticably more vibrant color and are typically mixed into a cleaner, smoother linseed oil. and in the yellow to white range, where the yellow from the linseed oil starts to compete with the pigments, substituting a safflower oil (clearer but more expensive) can make a huge difference.

and if you want to talk photo-sensetive chemistry... silver print/c-type prints/tmax b&w/c-41 color process/ammonia based blueprints or sepiatone process/.... well yr gonna have to come back when i have more time.

m1rr0r dash · 03.17.2008, 07:36 PM

i don't know if any of that relates to what yr trying to do... but hopefully there's a helpful idea somewhere in there...

!@#$%! · 03.17.2008, 07:51 PM

Quote:

Originally Posted by m1rr0r dash

i don't know if any of that relates to what yr trying to do... but hopefully there's a helpful idea somewhere in there...

sounds more like a recipe for a colorful mayo

touch me i'm sick · 03.17.2008, 09:00 PM

Quote:

Originally Posted by m1rr0r dash

i don't know if any of that relates to what yr trying to do... but hopefully there's a helpful idea somewhere in there...

yeah it's not really related to what i'mlooking to do. that's pretty interesting though.

so my teacher had two main suggestions for me today:
i can make sunscreen or aspirin through synthesis.
aspirin is pretty overdone, and it would be easier to test how effective the sunscreen is over the aspirin. i dunno if i'm happy with either of those choices though. i'll have to keep looking...

!@#$%! · 03.17.2008, 09:11 PM

http://www.teachersdomain.org/resour...oid/index.html

????

touch me i'm sick · 03.17.2008, 09:14 PM

woahh cool!
thanks !@#$%!

m1rr0r dash · 03.17.2008, 09:34 PM

Quote:

Originally Posted by !@#$%!

http://www.teachersdomain.org/resour...oid/index.html

????

nice job, teach... wanna grade these papers for me? i'm technically not on the "approved reader" list anyway....give me yr fax number.

yazz · 03.18.2008, 09:24 AM

You can do an experiment on how biofuels are produced. It is a very up-to-date topic, and its not hard to do the experiment. You can make ethanol out of corn, or sugar cane. Or hell, any starch containing substance, I used conkers for my project. If you have the proper materials, it should take only 2-3 days to do this.
http://bioweb.sungrant.org/Technical...on/Default.htm
Check that site out. I can help you out with anything if you decide to do this.

touch me i'm sick · 05.01.2008, 09:22 PM

just bumping thisi thread to let all of you who helped know that i'm finishing up writing my paper. i ended up making esters and testing their properties to talk about how their properties differ depending on the alcohol i used during the esterfication process. it's kind of boring, and not acutally what i would like to be doing, but it's getting done. i just wish i had started thinking about it earlier so i could do something i really enjoyed.

thanks a lot for your help

03.17.2008, 07:12 PM	#21
touch me i'm sick expwy. to yr skull Join Date: Jul 2006 Posts: 1,936	oh my goodness, this is really something. and quite impossible for me to do in a high school lab
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03.17.2008, 07:22 PM	#23
schizophrenicroom invito al cielo Join Date: Mar 2006 Location: behind you Posts: 10,807	gotta love ib! __________________ fuck i'm frustrated, freaking out something fierce, would you help me? i'm hungry and i stuffer and i startle, i struggle and i stammer til i'm up to my ears in miserable quote unquote "art"
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03.17.2008, 07:31 PM	#24
m1rr0r dash invito al cielo Join Date: Oct 2007 Location: atari Posts: 2,228	for serious, though... i've recently been curious about pigment chemistry since i've been painting more. for example "payne's gray" is a mix of amorphous carbon (lamp black - traditionally soot) and complex sodium alumino-silicate containing sulphur (aka french ultramarine) ... i realized i could get better result by buying the individual paints and mixing them on the canvas than with pre-mixed paints. the same is true of "yellow ochre" - cheap versions of this color typically contain multiple iron oxides and are cut with titanium oxide. i never really thought it made much difference until i did a side be side comparison, but paints containing a single, more-highly refined iron oxide have noticably more vibrant color and are typically mixed into a cleaner, smoother linseed oil. and in the yellow to white range, where the yellow from the linseed oil starts to compete with the pigments, substituting a safflower oil (clearer but more expensive) can make a huge difference. and if you want to talk photo-sensetive chemistry... silver print/c-type prints/tmax b&w/c-41 color process/ammonia based blueprints or sepiatone process/.... well yr gonna have to come back when i have more time. __________________
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03.17.2008, 07:36 PM	#25
m1rr0r dash invito al cielo Join Date: Oct 2007 Location: atari Posts: 2,228	i don't know if any of that relates to what yr trying to do... but hopefully there's a helpful idea somewhere in there... __________________
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03.17.2008, 09:11 PM	#28
!@#$%! invito al cielo Join Date: Mar 2006 Location: mars attacks Posts: 42,670	http://www.teachersdomain.org/resour...oid/index.html ????
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03.17.2008, 09:14 PM	#29
touch me i'm sick expwy. to yr skull Join Date: Jul 2006 Posts: 1,936	woahh cool! thanks !@#$%!
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03.18.2008, 09:24 AM	#31
yazz empty page Join Date: Mar 2008 Posts: 19	You can do an experiment on how biofuels are produced. It is a very up-to-date topic, and its not hard to do the experiment. You can make ethanol out of corn, or sugar cane. Or hell, any starch containing substance, I used conkers for my project. If you have the proper materials, it should take only 2-3 days to do this. http://bioweb.sungrant.org/Technical...on/Default.htm Check that site out. I can help you out with anything if you decide to do this.
	\|QUOTE AND REPLY\|

05.01.2008, 09:22 PM	#32
touch me i'm sick expwy. to yr skull Join Date: Jul 2006 Posts: 1,936	just bumping thisi thread to let all of you who helped know that i'm finishing up writing my paper. i ended up making esters and testing their properties to talk about how their properties differ depending on the alcohol i used during the esterfication process. it's kind of boring, and not acutally what i would like to be doing, but it's getting done. i just wish i had started thinking about it earlier so i could do something i really enjoyed. thanks a lot for your help
	\|QUOTE AND REPLY\|