Bicarb rockets are fun to make and launch.
We use 150 ml vinegar and 3.5g sodium bicarbonate in a 600 ml plastic bottle. It’s easy to make a bicarb rocket if you have a rubber bung which tightly fits into the top of the bottle. We use a tripod to launch from as shown below and can easily reach a height of a three storey building using these materials.
Here are some .gif animations of various bicarb rocket flights. Most of them were recorded at 240 fps (frames per second) using a Casio EX-FH100 camera.
Questions (answers next time)
1. What are the word and balanced symbol equations for this chemical reaction?
2. What is it that actually propels the rocket upwards?