Chemistry Lecture at Aston University
On Wednesday 29th June, 29 other students and I from Year 9 went to Aston University to hear a Chemistry Lecture. During the lecture, we saw many different experiments which mainly showed the changes of states of matter and how we use energy to make electricity. I learnt many different things, such as why carbon dioxide cannot be a liquid unless it is under a lot of pressure. The most exciting experiment was the dry ice experiment. The lecturer put dry ice into a tub of water and we saw how the solid carbon dioxide sublimed and became carbon dioxide in its gaseous form which then escaped from the water. I found this fascinating to watch. The most enjoyable moment of the day was when the Lecturer was showing and explaining to us how lowering the temperature decreases the resistance of a wire. He showed us with an experiment. He put a coil of copper wire attached to a light and a power source into a bowl of liquid nitrogen. The longer it was in there, the brighter the light became. We found out that it got brighter because the resistance of the wire was lowered. It was a great day and a very interesting lecture.
Ryanvir Raulia 9H
