Scientific observations

This week we did a science lab which involved chemicals and such. First we had to fill a beaker with 150mg of water. We then took the temp of the water. It was 20. We then put some copper chloride in the water. The chloride is a green crystal like dust. It turned blue when we stirred it  in the water. As we stirred the water it would dissolve. We took the temp and it went to 18 1/2 degrees. So it went down 1 /12 degrees. At this point the blue liquid is all dissolved and blurry. We then put a small strip of tin foil in the liquid. The foil started to decompose and turn a rust  color. We started to stir the tin vigorously and it then was completely decomposed. The water was then a reddish gray. We then filtered the water into a flash and only the water went into the flash. When  it was done filtering I took the leftover residue from the from the foil and put  it in a test tube. We then  put
acid in the test tube with the residue. As we examine, it turns a light blue again and starts bubbling. The test tube was also warm. I thought this was a fun experiment

Oreo Cookie Lab

Nick Jorge
9/20/13

This week we have done an Oreo lab. The assignment was to find the mass of the filling in a oreo. But we had to find the mass of a normal oreo, double stuff oreo, and mega stuff oreos. The variable of this lab is the filling in the oreo. The independent variable  is three different types of oreos.

Hypothesis: I thought that the filling is just double of the previous oreo. Like mega stuff would be 2 of the double stuff.

To do this experiment I first measured the weight in grams of the first oreo. I then writ the measurement. I did it with all the oreos and each one is basically just a gram more than than previous cookie.

Results: The results are below  in grams.

             The original-1g
             Double stuff- 2.01g
             Mega Stuff- 2.99g

Conclusion: Each of the fillings are just a gram more than the filling before and my hypothesis was close but not 100% right

Stuff I learned this week in Phy Science

The first thing I leanred this week has to do with bowling balls. I thought that all bowling balls would sink but I was wrong. It all depends on how dense the bowling ball is. Bowling balls have an odd shaped weight inside that will give it momentum but not all are the same. Some are more dense than others so it means that some will sink and others will float. I enjoyed, and leanrned a lot from this lab.

The senond lab we did this week was the gummy bear lab. The question is, what would happen if we put one gummy bear in water overnight. My prediction was that it would absorb the water in the cup and it would grow a little. But unfortunatly, the heat from that day made the gummy bears disslove in the water so I am yet to find out if my prediction is right. I also enjoyed this lab, even though we didnt get results.

Why Physical Science

Why I took this course

I want to learn more about Physics and things that have to do with it. I think taking this course will help me in the future sometime like when im building something that may have physics involved. Maybe someday ill be in a life or death situation and i may need to use physics. I am also excited for all the hands on experiments that we do in class.