Heating Water Practical Experiment The aim of this experiment to see the temperature in which the solution changes state (Solid-‐Liquid-‐Gas-‐Liquid) and imagine (at a particle level) what is actually happening. The apparatus was simply retort with a bosshead and clamp with a data logger in the clamp. We also had an electric heater with a beaker with ice, water and a stirring pill in it. Method:
1. Set up apparatus. 2. Fill beaker with 50mL water and the rest ice. 3. Wait for the temperature drop to 0ºC 4. Turn on heater and stirrer. 5. Wait until it boils. 6. Record for 2 minutes to see the plateau
Conclusion: In this experiment we noticed that right at the start the temperature went slowly up, then zoomed to about 90-‐95º and then slowed down again. This is because all the heat energy from the heater was used to transfer the ice to water and the water to gas. It plateaued at about 95 degrees because all the energy was then taken with the gas to condense in the air. The water boiled at about 96.6ºC, although it is expected to get to 100ºC, the altitude and air pressure effects the temperature in which it boils.