In celebration of 50th anniversary of the moon landing, Alder class made bottle rockets.  They used plastic bottles, straws, corks,

bicarbonate of soda and white vinegar.  Once they had made their rockets by sticking the straws on for legs and creating cardboard cones to make the bottles more aerodynamic, they quarter filled them with the white vinegar.  They went outside to see whether the chemical reaction between the vinegar and the bicarbonate of soda created enough gas to propel the bottle rockets into the air.

Some were more successful than others.  It was fun to watch, especially Mrs Efrat getting covered in vinegar and bicarbonate of soda!!