For this experiment we made hydrophobic sand. Hydrophobic sand repels water due to its high solubility. To make hydrophobic sand is made by coating regular sand in a silicon based hydrophobic spray and mixed. This needs to be repeated 2 to 3 times. Then it will be left to dry after that if you pour water on it it will not get damp from absorbing the water.
Key Concepts:
Ionic Compounds - Form between Metals and Non-Metals, exchange of electrons creates oppositely charged ions, strong bounds, hydrophilic
Covalent Compounds - Form between Non-Metals and Non-Metals, sharing of electrons, weaker bonds, hydrophobic.
Cations - Positively charged ions
Anions - Negatively charged ions
Hydrophobic - Will not dissolve in water
Hydrophilic - Dissolves in water
Polarity - Difference of charge
Solubility - How much something will dissolve something
Ionic Compounds - Form between Metals and Non-Metals, exchange of electrons creates oppositely charged ions, strong bounds, hydrophilic
Covalent Compounds - Form between Non-Metals and Non-Metals, sharing of electrons, weaker bonds, hydrophobic.
Cations - Positively charged ions
Anions - Negatively charged ions
Hydrophobic - Will not dissolve in water
Hydrophilic - Dissolves in water
Polarity - Difference of charge
Solubility - How much something will dissolve something
Materials:
- 1 tray
- 1 glass stir rod
- 1 rubber glove
- Silicon based hydrophobic spray
When I did this with my group we dropped the sand in a beaker of water then pulled it out it was still dry. We also tried to dip some water on some sand, the water only stayed on top. The experiment was fun and I hope we can do something similar soon.
Looking Beyond-
Water does not mix with oil because oil has a negative polarity and can not be dissolved by water. By mixing the silicon based hydrophobic spray with the sand repetitively the sand was covered by a oily hydrophobic water proof outer shell that repels water.
Looking Inward-
I did get my desired results I wanted. I think the fact that my group worked together well and didn't argue attributed to the result of this lab being a success.
Collaboration Looking Outward-
I worked with Mia, Anna, and D-Issac.
We all worked well together no one complained, everyone I think found the lab interesting.
Looking forward-
If I was able to do this experiment again I think I could do it better. I would not mind who I would work with. I think I would try to make less and put it at the bottom of an empty bottle with layers of water and sand to see what would happen. I think would like to if I find time.
Take aways-
I learned there is a more in dept reason oil does not mix with water.
Water does not mix with oil because oil has a negative polarity and can not be dissolved by water. By mixing the silicon based hydrophobic spray with the sand repetitively the sand was covered by a oily hydrophobic water proof outer shell that repels water.
Looking Inward-
I did get my desired results I wanted. I think the fact that my group worked together well and didn't argue attributed to the result of this lab being a success.
Collaboration Looking Outward-
I worked with Mia, Anna, and D-Issac.
We all worked well together no one complained, everyone I think found the lab interesting.
Looking forward-
If I was able to do this experiment again I think I could do it better. I would not mind who I would work with. I think I would try to make less and put it at the bottom of an empty bottle with layers of water and sand to see what would happen. I think would like to if I find time.
Take aways-
I learned there is a more in dept reason oil does not mix with water.