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As the gas is pushed into the balloon the internal pressure increases, to reduce this pressure the rubbery material expands to increase the volume and ultimately reduce the pressure. Once the balloon is filled with CO2 and the knot is tied the balloon will probably sink this is because CO2 is more dense than air.
Determine the mass of an empty balloon. Then blow as much air as you can into the balloon and determine the mass again. The blown up balloon should be heavier and occupy more volume (is bigger). This shows that the air used to blow it up has mass and volume, and therefore is matter.
The gas commonly used in balloons is helium. It is lighter than air, which causes the balloon to float when it is filled with helium.
the balloon that will blow up the biggest is sprite as it is more fizzer and will be big.
Can the amount the balloon fills up be controlled by amount of baking soda
yes you can
Put the balloon in the bottle with the blowing up part out and blow it up in the bottle.
it changes form
yes it is reversible
Blowing up a balloon.
Healum and water defanatly a pump
There are machines you can buy for blowing up balloons; check with a local party store.
your get someone whipped cream and mix it in with water and before blowing the balloon up you have to but the whit water in.
Assuming you meant expanding, which means growing larger. Blowing up a balloon, for instance, causes the balloon to expand.
Blowing up a balloon with a helium tank, then blowing up a different balloon with your mouth will make a difference in the outcome of your experiment. It'll most likely give you more sources of error.
a hot air balloon works when the hot air blowing from the bottom pushes up the balloon which lifts it up into the sky where it moves in the direction where the wind blows .
Do the experiment and find out yourself :)