Science Buddies: "Ask an Expert"

i need help with this project. i need to write its porpuse, a hypothesis, its methods, results and conclusions. what hypothesis can i make ? first i need to write the project and in May show it. PLEASE HELP and thanks. this is for the 13

please..

There are many hypotheses you could make for this project, ranging from "volume of vinegar is more important than ratio of vinegar to baking soda" to calculating the optimal ratio (based on the chemical reaction) and making your hypothesis that this complete reaction generates the greatest thrust. Various other hypotheses could be made, such as one based on the temperature of the mixture, or the degree of mixing of the ingredients.

The Science Buddies science fair project guide can provide you with a lot of guidance: http://sciencebuddies.com/science-fair- ... ndex.shtml