Day 3 Blog

Day 3


Today we were tested on our knowledge of the properties of water. For homework, we had to watch ta terrific video mr. quick made that gave the basics of the properties of water. In class, we were divided into two in order to teach a certain property to the class. I was paired up with the famous "Raymond Tang" and we were to explain why if you overfill a water glass, the water will form a convex surface. The reason why was because cohesion between the water molecules pulled it up over the actual glass. Since the molecules stuck together, they pulled each other up. The reason why the water formed into a convex surface at the angle it was was because of the angle the water molecule already is formed at, which was 120 degrees. We only managed to figure out the angle part when Mr. Quick kept asking "WHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHYWHY" Thanks Mr. Quick.

CONVEX SURFACE OF WATER YES MR. QUICK NOTE THE QUALITY OF THE PICTURE HAVE A GOOD DAY

HI MR.QUICK

Today we were given a quiz where we were supposed to chooses out of 14 cards which card to answer. Most of these cards were from a sheet we were given called the unit 1 objectives and I TOTALLY ACED THE ORAL QUIZ. I was given a short question which was something about Electronegativity of NH3 or something. After a few moments of uncertainty and Mr. Quick guiding me through the question (thanks Mr. Quick!) I realized that it was much more simple than I realized. Because the Nitrogen in the molecule was much more negative than the positive hydrogen atoms, the negativity of the entire molecule pointed up to the more negative nitrogen molecule. After the quiz, we did a worksheet that was part of the standards we needed to complete. ALSO DID I MENTION WE LISTENED TO VERY HIP MUSIC. MRQUICK YOUR MUSIC IS VERY HIP THANKS. 

MILK IN MOTION LAB

   Milk in Motion Lab

            Today, after learning about the EXTREMELY confusing grading policy, we proceeded into a lab to figure out why milk interacts with food coloring and dish soap as it did during the video we saw. 

Procedure:

1. Pour milk into Petri dish

2. Add a few drops of food coloring evenly spaced out on the milk DO NOT MIX

3. add dish soap in the middle of the milk and food coloring

4. PROFIT FROM THE RESULTS

So what happened?

THAT'S A VERY GOOD QUESTION MR. QUICK. As we saw in the video and the experiments we did, after the dish soap, we learn that the dish soap has a quality that is able to break up fat molecules by surrounding individual molecules and breaking the intermolecular forces between each molecules in the fats in the milk. This causes the surface tension of the milk to lower drastically because the cohesion between the lipids in the milk is decimated. Before the soap is applied, the food coloring is able to sit on top of the milk because the surface tension of the milk was still strong; however, when the dish soap was introduced, the nonpolar side of the soap molecule attached to the water molecules and the nonpolar side of the molecule attached and surrounded the fats and proteins in the milk. 

WHAT AN INTERESTING CLASS.