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Water Bag
Well, everyone knows that baking power and vinegar makes tons of gas and bubbles up and it is amazing. But what is the formula and the gas coming out? Â
Baking powder is sodium bicarbonate (NaHCO3) and some other stuff, vinegar is mainly acetic acid (CH3COOH) in water.
 Na+HCO3-+ CH3COOH → CH3COO-Na++ CO2 + H2O Â
The resulting gas is carbon dioxide, you also get some water and some aqueous sodium acetiate. Hey, but that's just boring stuff. What can you do with it that's FUN? How about a bag bomb?
Now this is what you need and how to do it. But first, please remember that you must repeat MUST have a responsible adult with you at all times. And a further warning this one can get messy so if you don't want to be cleaning the front room for a week, choose a safe place where it does not matter if things get messy.
And although you are dealing with normal household items which should cause no harm, if you spill vinegar on yourself or get baking powder on your body wash off with warm water. If you get either in your eyes, wash with plenty of warm water. If you have any concerns seek professional medical advice.
Right. This is what you will need.Â
a) Vinegar
b) baking soda
c) paper towel or toilet paper
d) warm (not hot) water
e) Zip lock bag... and yes there was something else. What was it, I forgot. Ah! yes
f) One big adult
Now you may need to test that you zip-lock bag is water and air tight. If you have any doubts test it with some water. Half fill the bag, close the zip and turn it upside down. If no water comes out, you are fine. If the water pours out - I hope you did it over the sink - you need to find another bag.
Tear the paper towel into pieces about 100 mm or 4 inches square. For toilet paper, just use one sheet. Put one heaped teaspoon of baking powder in the centre. Fold 1/3 of the paper in from one side and then 1/3 from the other. You should have a piece of towel that is about 33 mm x 100 mm or if you havn't converted yet say 1.1/3 inches by 4 inches. Next fold in the long side by 1/3 on both long side so you end up with a square about 33mm x 33mm or if you Imperial guys are still with us 1.1/3 inches square. The paper acts as a fuse to delay the reaction and give you time to run for cover.
Prepare about half a cup of Vinegar and about 1/3 cup of warm water. Grab hold of the zip-lock bag and pour in the vinegar and water. I don't need to tell you - but I will - Hold the bag upright so it doesn't all spill out. Half close the zip. Now, here is the tricky part, take your packet of wrapped baking powder and tuck it just under where you have closed the zip. Hold it in place above the liquid and close the rest of the zip.Â
Very important part now. Make sure the zip is closed properly. There will be air trapped in the bag so you could test the lock by a gentle squeeze of the bag to make sure that the air does not escape. But please, remember to keep the paper packet out of that darn vinegar.
OK, this is the part for which you have been waiting. Drop you hold on the baking powder pack, let it drop into the vinegar/water mixture. Give it a little swoosh around and quickly put the package down and stand back.
What you should see is the bag blow itself up and up until it suddenly bursts. I hope you enjoyed that and you will come back for more fun experiment.
David Hammerson has always had a great interest in entertaining children. He thinks that it comes from being childlike in his own approach to fun. Having the opportunity to have a group of 20 or so kids eager to party is too big a challenge to ignore. So Science Boffins was born with the hope to spread a little happiness along with some learning.
David has been a Director of Science Boffins Ltd since 2003. He is an experienced presenter as are the 20 or so other presenters currently working for Science Boffins Ltd. Nowdays, Science Boffins present 100's of parties to 1000's of children in London the South, Midlands and North West of England as well as Central Scotland.
Anybody interested in getting details of what David does is welcome to call him. Contact numbers can be found at Science Boffins Ltd. You will be sure to get a warm response.
how to tell if your water bag is leaking?
im going to be 39 weeks tomorrow, i feel like fluid is coming out of my vagina but i cant control it. its only happening sporadically. does this mean that my bag might be leaking?
Yes definitley you need to pack your bags and go on a vacation to the doctors to deliver your baby! You need to get there within an hour though as to not cause infection. Best of luck!!!!! Congrats!
Location where Abbas (as)'s water bag broke - Karbala
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