| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 744.1 | You need some acid... | LEDS::GRAHAM | | Fri May 20 1994 13:10 | 4 |
| Sounds like you left out the acid in the recipe to form the CO2. Try
using some vinegar to get the proper reaction.
John G.
|
| 744.2 | | KOALA::SYSTEM | Patty, DTN 381-0877 | Fri May 20 1994 14:00 | 1 |
| I thought it was baking Powder .... ??
|
| 744.3 | | BIGQ::MARCHAND | | Fri May 20 1994 14:21 | 6 |
| From what I recall when my kids did it. It was vinegar and baking soda.
Some interesting affects were when they put different food colorings
in it.
Rose
|
| 744.4 | Baking soda and baking powder | MOIRA::FAIMAN | light upon the figured leaf | Fri May 20 1994 16:11 | 6 |
| Baking *soda* is just a base, so you have to add an acid (such as vinegar or
lemon juice) to it to get a reaction.
Baking *powder* is a mixture of baking soda and an acid in dry form, so adding
water to it is enough to allow the acid and base to combine and produce the
desired foaming reaction.
|
| 744.5 | This works | SOLVIT::1VOICE::MURTHY | | Fri May 20 1994 16:47 | 12 |
| My son's "recipe" ...
Dish washing liquid -- 1 spoon
Vinegar -- 1/2 cup
color (optional)
hot water -- till the valcano is about 75 % full
baking soda -- 1 spoon.
This worked well with his model.
Good luck !
|
| 744.6 | Don't take OUR word for it! | BARSTR::PCLX31::satow | gavel::satow, dtn 223-2584 | Fri May 20 1994 16:57 | 6 |
| Why not make a real life chemical experiment out of it. You've already tried
baking soda and soap; now try different combinations of baking soda, baking
powder, and vinegar or lemon juice. Also try it with and without soap. My
guess is that baking soda and vinegar works best.
Clay
|
| 744.7 | VOLCANO ! | GRILLA::LALIBERTE | NEI/Systems Engineering | Mon May 23 1994 13:55 | 4 |
| thank you all. we had a very successful weekend with baking soda,
vinegar and food coloring. he did demos for just about everyone.
very cool stuff in his estimation...thanks again !
|
| 744.8 | Scientific details? | APSMME::STEGNER | | Wed Jun 01 1994 22:41 | 6 |
| My son wants to do this for his science fair project. He has to
know *exactly* what's happening and why, what gas is released, and
so on. Any chemists out there who could help us out?
Thanks,
Pam
|
| 744.9 | I am NOT a chemist . . . | BARSTR::PCLX31::satow | gavel::satow, dtn 223-2584 | Fri Jun 03 1994 10:38 | 18 |
| and you have to promise not to cite the source, but I'd guess
^
CH3COOH + NaHCO3 --> NaC2H302 + H2O + CO2|
acetic sodium sodium water carbon
acid bicabonate acetate dioxide
(vinegar) (baking
soda)
The numbers are all subcripts. The crude thingie by the carbon dioxide is an
up arrow indicates that carbon dioxide is a gas.
I am positive of the left side of the equation, and I am positive that carbon
dioxide is the gas. Not completely certain that sodium acetate is a product,
but it seems logical.
Clay
|
| 744.10 | | 64346::STEGNER | | Fri Jun 03 1994 12:16 | 1 |
| Clay, you're a peach! :-)
|
| 744.11 | How to make volcano base?? | SALEM::JIMENEZ | | Wed Aug 03 1994 11:43 | 5 |
| could some one tell me, How to make the base where you are pouring all
this ingredients in...
Thanks
|
| 744.12 | base of volcano | GRILLA::LALIBERTE | NEI/Systems Engineering | Wed Aug 03 1994 12:32 | 1 |
| we used modelling clay.
|
| 744.13 | | BIGQ::MARCHAND | | Wed Aug 03 1994 12:48 | 10 |
|
I can't remember how much of each but we used, flour, water , and
salt. Not very much salt. Just keep kneading enough water in with
the flour and a small amount of salt until you feel comfortable that
it's can be molded. Then make the volcano and let it dry for a day
or two. Too much water will make it take longer to dry.
The modelling clay sounds better...
Rose
|
| 744.14 | | OASS::BURDEN_D | and a dozen grey attorneys | Thu Aug 04 1994 10:04 | 4 |
| I remember doing this was I was in school - I think we put a paper cup inside
the 'volcano'.
Dave
|