The balloon expands.
When heat is added to air inside a balloon, the air molecules move faster and spread out, causing the balloon to expand or inflate. This is due to the increase in pressure inside the balloon as the air molecules gain kinetic energy from the heat.
you will have to add carbonate of soder and vineger its the easiest way!
and add it to water
When you add heat to liquid water it gets warm. If it gets warm enough it will boil and evaporate.
BOOM.
Nothing? If you do nothing to it, nothing will happen to it.
Put a straw in the end of it and blow into the balloon. That should make it fly straight although make sure you don't use helium and make sure there is as little of wind around as possible. From Matthew
To inflate a balloon to a desired size, we need to know the volume and required lift. Typically a 9-inch helium-filled balloon can lift about 8g of weight. If you want to increase the lift, you can add more helium.
The liquid may boil and become a gas.
I captured hydrogen through a tube in a balloon. Then, with the balloon not all the way blown up, I put some oxygen in it. When I lit the balloon with a lighted punk it exploded with more heat and force than just a balloon with hydrogen. when the two gases were in the same balloon and not exploded they were added but not combined. When they exploded they became combined. Please, do not do this unless you have an experienced lab tech helping you.
the aluminum will dissolve. Generating lots of heat during the reaction
Yes. And if you add it too vinigar it makes smoke. You take a balloon and fill 1/5 of it with baking powder. You then only set the top of the balloon around a beaker filled 1/4 of the way with vinegar. Then hold the balloon up right and let the baking powder mix with the vinegar. It will blow up the balloon on it's own. It's actually pretty cool.