Energy Changes Required Practicals

Temperature Change Practical

1. Add 25cm³ of Hydrochloric Acid to a Polystyrene Cup
2. Place the cup inside of a beaker to make it more stable
3. Record the initial temperature using a thermometer
4. Add 5cm³ more of Hydrochloric Acid to the Polystyrene Cup
5. Put a lid on the cup and stir the solution using the termometer through a hole in the lid
6. When the temperature appears constant on the thermometer, record it
7. Repeat steps 4 - 6, adding 5cm³ of Hydrochloric acid up until 40cm3 extra has been added in total
8. Repeat steps 1 - 7 and calculate an average for each result

Safety Concerns

• Wear goggles