Katie from Science Buddies came in to work with us on activities linked to time. First of all she showed us how to operate a stop watch. We then measured some alkali powder into a beaker, measured 10ml of acid (white vinegar) in a syringe and added this to the powder. We timed how long it took to dissolve. We then stretched a balloon with a balloon pump and used a funnel to put more powder inside the balloon. Katie helped us to use a funnel to pour more of the vinegar into a plastic bottle. The balloon was placed over the top of the bottle and lifted up. We observed the balloon inflate in 1 minute.
