Wilson Lee My Partner is Arthur Ip Form:8D Team: Newtons and Jobs Title: Extracting Salt by Evaporating Salt
Objective:
To understand how the water is evaporated from the brine. How long does it take to evaporate the water with the bunsen burner.
Materials:
- Heat map Equipment
- bunsen burner
- evaporating dish
- tongs
- pen and sheet
- timer
- wire net
- tripod
- stick
- lighter and a stick
Chemicals: Brine Solution
Procedure:
1. Set up all the equipments, including bunsen burner.
2. Put brine in the evaporating dish
3. light up the stick with a lighter and then turn on the gas to make the burner heat up
4. Use a timer to time the progress, how long it takes
5. Wait till all the water is evaporated, and then record down the results.
Results:
The whole process took about 16 minutes, and the look of it is the salt all appeared, and the water evaporated. The salt mostly appeared at the side.
Guide Questions:
1. It is because extracting the salt from the brine need to use evaporation, heating and boiling the brine can make the water evaporate, thus, the salt can be extracted.
2. Yes, other than boiling the water, there are other methods to make the water to evaporate, for-example, we can leave the brine under sunshine, and the water will be evaporated after a period of time.
3. The water go to the atmosphere or air, it is evaporated.
4. No, it is not possible, because in the brine, salt is dissolved in water, so we must make the water to evaporate, in order to extract the salt, so we cannot obtain both salt and water at the same time.
5. I learnt that during the process, the salt mostly appeared at the side of the evaporation dish, because it cannot form at the middle; it will sink at the middle. Salt have more density than water, so it is too heavy to evaporate.
6. 10, because I did a good job by doing all the jobs, cleaning up, timing and co-operating with my partner. And it is a success at last. I got the chemical, the brine solution and safety glasses.
7. 10, because Arthur contributed many things, he cleaned up and also helped me to collect information and notes, He prepared and got all the equipments. 8. I can improve my experiment by sometimes opening the air hole because the brine's water takes too long to evaporate when there is not enough heat.
Objective:
To understand how the water is evaporated from the brine. How long does it take to evaporate the water with the bunsen burner.
Materials:
- Heat map Equipment
- bunsen burner
- evaporating dish
- tongs
- pen and sheet
- timer
- wire net
- tripod
- stick
- lighter and a stick
Chemicals: Brine Solution
Procedure:
1. Set up all the equipments, including bunsen burner.
2. Put brine in the evaporating dish
3. light up the stick with a lighter and then turn on the gas to make the burner heat up
4. Use a timer to time the progress, how long it takes
5. Wait till all the water is evaporated, and then record down the results.
Results:
The whole process took about 16 minutes, and the look of it is the salt all appeared, and the water evaporated. The salt mostly appeared at the side.
Guide Questions:
- Why was it needed to boil the brine? (2 marks)
- Would it have been possible to extract salt from the brine without boiling it? (3 marks)
- Where did the water go? (1 mark)
- Would it be possible to extract salt from the brine AND collect the water as well? Why or why not? (3 marks)
- What did you learn fromthis experiment? (1 mark)
- From a scale of 1 to 10, how would you rate your participation in this experiment? Why? (1 mark)
- Froma scale of 1 to 10, how would you rate your partner's participation in this experiment? Why? (1 mark)
- How can youimprove your experiment? (1 mark)
1. It is because extracting the salt from the brine need to use evaporation, heating and boiling the brine can make the water evaporate, thus, the salt can be extracted.
2. Yes, other than boiling the water, there are other methods to make the water to evaporate, for-example, we can leave the brine under sunshine, and the water will be evaporated after a period of time.
3. The water go to the atmosphere or air, it is evaporated.
4. No, it is not possible, because in the brine, salt is dissolved in water, so we must make the water to evaporate, in order to extract the salt, so we cannot obtain both salt and water at the same time.
5. I learnt that during the process, the salt mostly appeared at the side of the evaporation dish, because it cannot form at the middle; it will sink at the middle. Salt have more density than water, so it is too heavy to evaporate.
6. 10, because I did a good job by doing all the jobs, cleaning up, timing and co-operating with my partner. And it is a success at last. I got the chemical, the brine solution and safety glasses.
7. 10, because Arthur contributed many things, he cleaned up and also helped me to collect information and notes, He prepared and got all the equipments. 8. I can improve my experiment by sometimes opening the air hole because the brine's water takes too long to evaporate when there is not enough heat.