HOW MANY MENTOS DO YOU NEED TO MAKE A 'COCA COLA GEYSER'

Making the back board in order to  measure how high the coke spouts

Measuring the coke bottle, because the bottle adds an additional 30 cm of height

Here I am counting out my equipment to see how much I have for the experiments

Cutting out a bottle to make a makeshift funnel

Video of experiment 3