2. Methods

2.1 Equipment List

  1. 2 litres of distilled water
  2. 100ml measuring cylinder
  3. A teaspoon
  4. 30g of salt
  5. A 500ml beaker
  6. A 250ml beaker
  7. 1 hotplate
  8. Stopwatch
  9. 1 Electronic Weighing Scale
  10. 1 Ceramic Tile
  11. Rubber gloves

2.2 Experiment for Control
  1. Set the temperature of the hotplate the maximum.
  2. Put the 500ml beaker onto the hotplate
  3. Pour 100 ml of distilled water into the 500ml beaker.
  4. Wait 10 minutes for the distilled water in the 500ml beaker to evaporate.
  5. Wait 5 minutes for the water to cool down
  6. Measure the leftover water in the 500ml beaker with the measuring cylinder.
  7. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100 ml
  8. Repeat the experiment 3 times
  9. Calculate the average amount of water evaporated for the 3 experiments
  10. Calculate the average rate of evaporation by dividing the average amount of water evaporated by 10.
2.3 Experiment for Temperature of Water
  1. Set the temperature of the hotplate to heat level 3.
  2. Put the 500ml beaker onto the hotplate
  3. Pour 100 ml of distilled water into the 500ml beaker.
  4. Wait 10 minutes for the distilled water in the 500ml beaker to evaporate.
  5. Measure the leftover water in the 500ml beaker.
  6. Wait 5 minutes for the water to cool down
  7. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100ml
  8. Repeat the experiment 3 times
  9. Calculate the average amount of water evaporated for the 3 experiments
  10. Calculate the average rate of evaporation by dividing the average amount of water evaporated by 10.
2.4 Experiment for Light
  1. Set the temperature of the hotplate to maximum.
  2. Put the 500ml beaker onto the hotplate
  3. Pour 100 ml of distilled water into the 500ml beaker.
  4. Turn off all the lights in the room and roll the curtains down.
  5. Wait 10 minutes for the distilled water in the 500ml beaker to evaporate.
  6. Measure the leftover water in the 500ml beaker.
  7. Wait 5 minutes for the water to cool down
  8. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100ml
  9. Repeat the experiment 3 times
  10. Calculate the average amount of water evaporated for the 3 experiments
  11. Calculate the average rate of evaporation by dividing the average amount of water evaporated by 10.
2.5 Experiment for Surface Area (250ml)
  1. Set the temperature of the hotplate to maximum.
  2. Put the 250ml beaker onto the hotplate
  3. Pour 100 ml of distilled water into the 250ml beaker.
  4. Wait 10 minutes for the distilled water in the 500ml beaker to evaporate.
  5. Wait 5 minutes for the water to cool down
  6. Measure the leftover water in the 250ml beaker.
  7. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100 ml
  8. Repeat the experiment 3 times
  9. Calculate the average amount of water evaporated for the 3 experiments
  10. Calculate the average rate of evaporation by dividing the average amount of water evaporated by 10.
2.6 Experiment for Wind
  1. Set the temperature of the hotplate to maximum.
  2. Put the 500ml beaker onto the hotplate
  3. Pour 100 ml of distilled water into the larger 500ml beaker.
  4. Turn on all the ceiling fans to max.
  5. Wait 10 minutes for the water to evaporate.
  6. Wait 5 minutes for the water to cool down
  7. Measure the leftover water in the 500ml beaker.
  8. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100 ml
  9. Repeat the experiment 3 times
  10. Calculate the average amount of water collected for the 3 experiments
  11. Calculate the average rate of evaporation by dividing the average amount of water collected by 10.                       
2.7 Experiment for Purity (Amount of salt)
  1. Set the temperature of the hotplate to maximum.
  2. Salt the distilled water with 10 grams of salt.
  3. Pour 100 ml of distilled water into the 500ml beaker.
  4. Put the 500ml beaker onto the hotplate
  5. Wait 10 minutes for the water to evaporate.
  6. Wait 5 minutes for the water to cool down
  7. Measure the leftover water in the 500ml beaker.
  8. Calculate the amount of water that has evaporated by deducting the leftover amount of water from 100 ml
  9. Repeat the experiment 3 times
  10. Calculate the average amount of water collected for the 3 experiments
  11. Calculate the average rate of evaporation by dividing the average amount of water collected by 10. 
2.8 Diagram





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