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fish 02-19-2006 12:34 PM

[QUOTE=fish]


does anyone know how to use vegetables and fruit to dye fabrics specifically cotton linen and wool?? and can you thing of a good hypothesis and problem

dreamerofeternity 02-19-2006 05:50 PM

It's quite a broad topic to ask what fruit/vegetables could produce the best dye. I suggest you find one fruit/vegetable that contains a dye and ask how does a different type of that fruit/vegetable or how the fruit/vegetable is grown affect the dye.

But if possible, stay away from this topic. (It's pretty dangerous.) Good luck!

seaufin/charger 02-28-2006 02:35 PM

ok help me
 
Heres what it is called not found on this site

Vinaigrette V. S. Coca Cola
If you have watched someone make an oil and vinegar salad dressing, you will have undoubtedly noticed that the oil and vinegar separate after a while. Does this happen to some other liquid made up of different substances? How about Coca cola - would it ever separate into it's constituent parts?

any help would be appreciated Mad Scienctist.

dreamerofeternity 02-28-2006 05:21 PM

Quote:

Originally Posted by seaufin/charger
Heres what it is called not found on this site

Vinaigrette V. S. Coca Cola
If you have watched someone make an oil and vinegar salad dressing, you will have undoubtedly noticed that the oil and vinegar separate after a while. Does this happen to some other liquid made up of different substances? How about Coca cola - would it ever separate into it's constituent parts?

any help would be appreciated Mad Scienctist.

Do you know how water and oil separate? This is the same concept. Oil is made up of lots of hydrophobic (water hating) chains. (Research the composition of oil. It has a lot of fatty acid chains linked to glycerol.) Vinegar (acetic acid), has the function group COOH. The hydrogen molecule breaks away in solution to become COO-. (COO minus.) Because the proton of the hydrogen breaks away (hydrogen is basically one proton) and protons are positively charged, it the molecule becomes polar. Polar and inpolar liquids cannot dissolve in one another, such as water (polar with a negative oxygen end and positive hydrogen ends) and oils cannot mix.

Would it happen to any other liquids? I don't know. It depends on what the solution is composed of. So you can try performing that experiment.

Good luck!:o

seaufin/charger 03-01-2006 12:37 PM

Hey thanks dude!

prettyeyes85 03-01-2006 12:47 PM

Quote:

Originally Posted by Mad Scientist
Interesting - what do you mean by "perform" though... are you referring to sports? Like running, basketball etc?

If that's the case, you'll need to do a pretty long statistical project - involving a large number of people, over as long a period of time as possible.

YOU'LL NEED TO DO A PRETTY LONG STATISTICA POJECT INVOLVING MANY PPL OVER A LOND PERIOD OF TIME A PROSSIBLE:)

Copiblue 03-18-2006 03:58 PM

Help me!
 
Quote:

Originally Posted by Mad Scientist
This is the new forum for all questions relating to Grade 6 to 8 Food Science fair projects.

If your's is a grade 6 - 8 project, post your questions here from now onwards, if you want fast answers!

I need more research on my science project on how your sense of sight affects your esnse of taste! By March19!!!!!:eek: :eek: :eek: :confused:

dreamerofeternity 03-19-2006 05:04 PM

Quote:

Originally Posted by Copiblue
I need more research on my science project on how your sense of sight affects your esnse of taste! By March19!!!!!:eek: :eek: :eek: :confused:

Okay, first, you'll need to research how sight and taste is perceived. Of course, taste buds, rods and cones in the retina, etc.

But I think the focus of your project is how much do the neurons carrying the signals for taste overlap with the neurons carrying the signals for sight. I don't know where taste and sight is perceived in the brain, so check up on that. But the signals should both go through the pons (relay center for the brain.)

However, in doing an experiment for this, it'll be hard to find any conclusive evidence... (just a warning...)

Good luck!:D

Scienceismylife_2006 05-19-2006 09:42 PM

help!!
 
i need to find out how to distill ink, milk, and vinegar

sciencechica2 05-20-2006 07:30 AM

Egg Drop
 
I need some help on the Amazing Egg Drop

We can use any materials we need but not only can the egg not break from falling from a 2s story building but it has to be fast.

Thanks for your help!


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