States

BEST UNIT YET.

To kick off this unit we looked at the concept of polarity with a dope experiment consisting of playing around with blue and brown sand. We discovered that the blue sand was made up of CH bonds which made it completely non-polar and ultimately unable to form Dipole-Dipole IMF's with the water. As seen in the picture to the left the blue sand was extremely hydrophobic and very to mess with. As for the brown sand, without water it felt like kinetic sand but once combined with water the brown sand it immediately mixed and made a gross brown mixture. Lastly, Nathan and I came up with some creative real-world applications for the blue sand's reaction to water such as applying a liquid with the same properties to baseballs to prevent water-logging.

For our next lab we looked closer into IMF's and how they relate to surface tension. Using a q-tip with detergent dipped into water filled with pepper, we were able to witness an immediate spreading of the pepper as far away from the q-tip as possible(as seen in the picture above). This separation had to with the intermolecular forces(DDIMF and IDIMF) between the oxygen and detergent and the water and the pepper ultimately causing the water to move which took the pepper along for the ride. All I could think about during this lab was a possible explanation for Moses parting the Red Sea.

Next, we played with bubbles. With the combination of soap,water, and glycerin were able to make massive bubbles. We learned that glycerin helps protect the bubble and increase the size as soap just destroys the surface tension of H20. Although it was a windy day, the bubbles were DOPE.

Lastly, we learned about chromatography and how its used in the crime world. Using filter paper marked with 5 different pens we conducted an experiment to see which pen was used on which piece of paper. Barely dipping the paper into water we were able to see that the Tattoo and Crayola went up the paper ultimately being the most polar. The BIC, Expo, and sharpie pens were nonpolar as they did not change in water.

This chapter was filled with exciting new concepts and experiments and I enjoyed it profusely. I was able to fully comprehend the material as I got a 97 on the unit test. Dope lesson overall!

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