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yes it is reversible
Yes, because when it's blown up, it's still gunpowder. Blowing is caused by a chemical reaction.
Enzymes are catalysts and increase the speed of a chemical reaction without themselves .A chemical reaction can be represented by a chemical equation. An enzyme is a protein that speeds up a biochemical reaction .
In any chemical equation you start with reactants and end up with products.
That would be little old Helium. Hydrogen makes baloons rise even faster, but has the unfortunate disadvantage of blowing up.
Mixing is a physical process.
Baking soda and vinegar must react. The reaction yields a gas that inflates the balloon.
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
A chemical reaction in a hot air balloon can be when the propane is heated up. That is a chemical reaction because something has heated up.
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.