Chemistry In The Kitchen!

In room 10 we are learning about Kitchen Chemistry. So yesterday we did an experiment, it was about the liquid, gas and solid our ingredients were only a tin, water and a pressure cooker. We saw if  the heat would take the pressure from the water. It was frightening for some of us but some weren't scared I have got to admit it was pretty COOL!  We realised with the lid on top it would trap the air so when there was a lot of air the lid exploded because it couldn't take the heat.