Seal the bottle with the cork and valve. Open the valve and attach the pump. Safety: Check the launch area is clear before you start pumping. Get anyone watching to stand at least 3 metres back.

Build and launch a rocket powered by a chemical reaction between baking soda and vinegar! This exciting experiment demonstrates how chemical reactions can create pressure, and how that pressure can be ...

The bottle rocket challenge: faces from across the BBC compete to build and launch bottle rockets ... two of them together in a bottle, with a cork in the top, the carbon-dioxide gas has nowhere ...

Then pour the same amount of dish soap down the inside of the bottle to see if you are right. 6. One by one, drop the marble, grape, and cork into the bottle. You may have to cut these objects for ...