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The hot water heats up the air inside the bottle, causing it to expand, forcing some of the air out of the bottle and into the balloon, causing it to inflate. The larger the bottle, the more air that will be pushed into the balloon. The air in the balloon will quickly cool and, since hot air is less dense and therefore rises, the cooler air is forced back into the bottle to be heated up. Eventually the air will be a constant temperature and the balloon will reach the limit of inflation. As the water cools, the air cools and the balloon begins to deflate.
If the wool is already produced into strings, then you can make it like normal! (: If it is not, you can compact the wool into string with glue, flour, and water.
a balloon float on water
If you put plaster over a water balloon and freeze it, the water balloon will bulge out.
Flour to cold water will just float on top, hot water to flour will cook the flour.
A water balloon is filled with water, and other balloons are filled with air or helium.
The water is compacting the flour.
you have made a water balloon!
All you'll need is paper (newspaper is good), flour and water, a balloon, and paint. Firstly, decide what you'd like to make. But I think the Death Star would be easy, so look for some photo's on the Internet. Then blow the balloon up, this will be the size of your Death Star, so don't make it too small. Tie a string to the end and hang it up somewhere, and lay newspaper out below it. Now make a Mache glue, mix some flour with a little bit of water (not too much! start with a little bit and add some more if you need it), you need a runny consistency. Tear up the paper, and dip it in the glue; then start covering the balloon. Just cover it for now and don't make the layer too thick, you can add another layer when it has dried. Three layers should do. When the last layer has dried, cut a hole in the end with the string, if the balloon has not deflated; pop it and remove the remains. Now paint it like your picture, then fill it with wrapped lollies and confetti. Put some holes in the sides of the opening, thread some string through and hang it up. Finished! I hope it helps.
Why does the balloon with no water break in the flame? And balloon with water not break? The flame heats the rubber of both balloons. The rubber of the balloon without water becomes so hot, that it becomes too weak to resist the pressure of the air inside the balloon. When water inside the balloon is placed in the flame, the water absorbs most of the heat from the flame. Then, the rubber of the balloon does not become very hot. Because the rubber does not become hot, it does not weaken, and the balloon does not break. Water is a good absorber of heat
The water has a mass of roughly 560 grams, depending on its purity and temperature. We have no idea what the mass of the balloon is.
When water is added to flour it forms a batter, which with increasing amounts of water becomes sticky.