Home science: boil water with a syringe
Boil water without a kettle!
Warning! Only under adult supervision.
- glass bottle;
- rubber stopper with one hole;
Insert a syringe into a rubber stopper with one hole. Pour some hot water into a glass bottle, plug the neck with the stopper, and pull out the syringe plunger – the water boils!
As you pull the plunger on the syringe, the pressure inside the bottle decreases, and the boiling point of the water decreases with it. A similar phenomenon can be observed in the mountains: due to the increase in elevation, atmospheric pressure decreases, and with it, the boiling point of water. For example, on the summit of Everest, water boils at 69 °C (156.2 °F)!
Many more cool experiments are waiting for you in the MEL Physics subscription!