an adult sets off a rocket powered by the chemical reaction of baking soda and vinegar. students figure out how the rocket works.
what happens when we mix baking soda and something sour? it makes a gas.
i will put baking soda in this part of the rocket, and vinegar (which is sour) in this part of the rocket. then i will put them together. what will happen inside? where will the gas go? trapped. the pressure will build up, until it blows the top off.
it is a rocket powered by a chemical reaction.
i need you to stand back. and i will run back too once i have set it up. important 