First, we create a space for the reaction to occur using a bottle of water. Using the knowledge we have of reactions and collisions in chemistry class, we chose to use a small bottle to increase collisions chances additionally with a flat base for easier decorating. After narrowing different bottle brands down, we decided to go with Fiji water bottles.

To test the chemicals before using the car is very important, as to find out the amount needed for a certain distant. For example, after research, me and my team found multiple websites claim that the perfect amount of baking soda and vinegar should be a 1:2 ratio. But after testing even more, I found out that even a 1:5 ratio should work very well, as long as the amount of vinegar is bigger than baking soda.

Our first inspiration was for the bottle to has the resemblance of a rat, more specifically, my rat. The idea popped up when I was showing the picture of my rat to another member, and they suggest to use that idea as well. Although the first design isn't the best.

Using paper mache and cardboard, I first create the basic shape of the rat by using hot glue and stick pieces of cardboard together. Then, using a home-made paper mache, I stick paper to the shape, creating the rat form.

Some of my teammates disliked the other looks, as well as doing the paper mache has greatly increased the car's weight, we change it to another material - cardboard.

Cardboard, at first, may looks unprofessional for a project like this. But it has its pros: being lighter, easier to paint, and easier to shape. With a new theme this time, a honey badger, we finish our project with this look.