6i Visit Helsinki University Chemistry Laboratory

lab4lab5

When we visited the chemistry laboratory, we saw what effects liquid nitrogen (-190 degrees celsius) had on the air pressure inside an air balloon. With cold, the air pressure decreased and the balloon shrunk. With heat the air pressure increased and the air balloon became more bouncy.

lab3 lab1

We also made a rainbow in a test tube. We first dissolved different amounts of sugar in different coloured waters. We then carefully put some of each colour in one test tube to make a rainbow.

lab2