Title: Extracting Salt from salt and Sand Mixture
Objective:
Is to know how salt is extracted in a mixture by filtration.
Materials:
- Equipment: Filter paper, funnel, beaker, bunsen burner, conical flask, tongs, lighter, stick, evaporating dish, heat map, tripod and a wire net.
- Chemicals: Salt and sand mixture, water and brine after filtering.
Procedure:
1. Prepare all the materials.
2. Put the mixture in the water that is in the beaker, and mix it to make the salt dissolve.
3. Put filter paper on funnel, conical flask at the bottom of the funnel, and pour the mixture to the filter paper.
4. But the brine in the evaporating dish.
5. Set up the bunsen burner and light it up with a stick and a lighter.
6. Wait until the water is evaporated, and extract the salt, record down the results.
Results of the progress:
The salt that Arthur and I extracted weighs 9.2 grams, and scored 5 (the cleanest) for the pure salt mark.
Guide Questions:
1. It is because you need to make the salt in the mixture dissolve, in order to filter and make the brine's water evaporate, to extract the salt.
2. Because there are sand mixed with the salt, and the filtering process have some problem (did not filter properly); sand may "escape" to the brine.
3. Yes, it was successful because we stir the mixture with water, long enough that all salts were able to be dissolved, and we also filter properly, no giving gaps for the sand to go to the flask.
4. I learned that to extract pure salt, the filtering part is very important, and also better to stir the mixture longer, so salt can dissolve.
5. 10, because I did all the jobs that I am needed to do, preparing the equipments and also co-operating with Arthur. It was a successful experiment thanks to Arthur and I.
6. 10, because Arthur participated by preparing, setting up the bunsen burner and recording down the results. He is a very helpful partner.
7. I can add more water to the mixture, stir it longer and have patience to wait the filtering process (it takes a long tome)! In order to have more salt and weight, to be the winner!!!
Objective:
Is to know how salt is extracted in a mixture by filtration.
Materials:
- Equipment: Filter paper, funnel, beaker, bunsen burner, conical flask, tongs, lighter, stick, evaporating dish, heat map, tripod and a wire net.
- Chemicals: Salt and sand mixture, water and brine after filtering.
Procedure:
1. Prepare all the materials.
2. Put the mixture in the water that is in the beaker, and mix it to make the salt dissolve.
3. Put filter paper on funnel, conical flask at the bottom of the funnel, and pour the mixture to the filter paper.
4. But the brine in the evaporating dish.
5. Set up the bunsen burner and light it up with a stick and a lighter.
6. Wait until the water is evaporated, and extract the salt, record down the results.
Results of the progress:
The salt that Arthur and I extracted weighs 9.2 grams, and scored 5 (the cleanest) for the pure salt mark.
Guide Questions:
- Why did you need to add water to the salt/sand mixture? (1 mark)
- Why were some extracted salt not pure white in color? (1 mark)
- Was your experiment successful? Why or why not? (2 marks)
- What did you learn from this experiment? (1 mark)
- From a scale of 1 to 10, how would you rate your participation in this experiment? Why? (1 mark)
- From a scale of 1 to 10, how would you rate your partner's participation in this experiment? Why? (1 mark)
- How can you improve your experiment? (1 mark)
1. It is because you need to make the salt in the mixture dissolve, in order to filter and make the brine's water evaporate, to extract the salt.
2. Because there are sand mixed with the salt, and the filtering process have some problem (did not filter properly); sand may "escape" to the brine.
3. Yes, it was successful because we stir the mixture with water, long enough that all salts were able to be dissolved, and we also filter properly, no giving gaps for the sand to go to the flask.
4. I learned that to extract pure salt, the filtering part is very important, and also better to stir the mixture longer, so salt can dissolve.
5. 10, because I did all the jobs that I am needed to do, preparing the equipments and also co-operating with Arthur. It was a successful experiment thanks to Arthur and I.
6. 10, because Arthur participated by preparing, setting up the bunsen burner and recording down the results. He is a very helpful partner.
7. I can add more water to the mixture, stir it longer and have patience to wait the filtering process (it takes a long tome)! In order to have more salt and weight, to be the winner!!!