Equipment:
- Table Salt
- Thermometer
- Water
- Measuring Cup
- Tablespoon Measuring Spoon
- Cooking Pot
- Stirring Spoon
- Stove
- Lighter
- Oven mitts or tea towel
Safety Precautions:
- In this experiment, the thermometer may become very hot. To ensure that your hands do not get burned, wear oven mitts or hold a tea towel when handling the thermometer.
- As the water is boiling in the cooking pot, the cooking pot may heat up. Beware not to touch the steel and hold it carefully by its handle.
- Make sure that if you have long hair or loose clothing, it does not come in contact with the flame from the stove.
- Ensure that the cooking pot is cooled completely before repeating the experiments.
- Carry the cooking pot with the boiled water carefully when cooling it down to avoid any spillage.
Method:
- Measure 250ml of water and add it to the cooking pot.
- Boil the water and record the highest temperature reading.
- Empty the cooking pot and let it cool down.
- Add another 250ml of water into the cooking pot.
- Measure out a tablespoon of salt and mix it into the water with the stirring spoon.
- Boil the water and record the highest temperature reading.
- Repeat steps 3 – 5 with 2 tablespoons of salt.
- Repeat experiment another 2 times for reliability.
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