Wednesday, 6 April 2011

Equipment, Precautions and the Method

So in science today, I asked my teacher about whether the method and everything had to be included in this blog. It doesn't really matter, but I think I'll include it.

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:
  1. Measure 250ml of water and add it to the cooking pot.
  2. Boil the water and record the highest temperature reading.
  3. Empty the cooking pot and let it cool down.
  4. Add another 250ml of water into the cooking pot.
  5. Measure out a tablespoon of salt and mix it into the water with the stirring spoon.
  6. Boil the water and record the highest temperature reading.
  7. Repeat steps 3 – 5 with 2 tablespoons of salt.
  8. Repeat experiment another 2 times for reliability.

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