For my science fair we are doing a bottle rocket experiment to see what chemical reaction will make the bottle go higher, But the name of our science fair is Hunting Heads. We are using two chemical reactions, one is a bottle with water and a bike pump, and the other one is a vineger and baking soda one. when we tested witch chemical reaction will make the bottle go higher the vineger one only went up 2 meters high and the bike pump and water one went up past the roof i don’t know how high that is, but yeah that is what we are doing for science fair.