hisoka SG the last one is a mixture of 3 things: sodium, water and compressed oxygen i think compressed hydrogen also can. actually no need the baking posder also
newmanmback SG i ne i experienment we all student must eat potatoes drink milk and wait 1 hour after stomach heavy pants down and f art in front of a lit burner and the whole class lab goes "boom"
lpx88 SG yea im damn bloody sure it's vinegar..u put the powder into the bottle or something then the bottle will speed away...or somethin like that..i did that when i was in Primary 3
Croaking_Toad SG baking soda - sodium bicarbonate plus vinegar - weak acid gives off CO2. Is that rite?
nightzip SG put everything in a bottle, then immediately put a balloon over it, u will see the balloon get inflated with CO2.