Extra Credit

For the extra credit, I chose to respond to the quote: “Education is the key to unlock the golden door of freedom” by George Washington Carver. This quote means many things to me. I agree with this quote for many reasons. It mostly means that education gives us knowledge that we can use throughout our lives. If someone is educated, then they will feel more confident about things by using the education that he or she has been given. If someone is not that educated, the person might be more hesitant to do daily things. Also, without education, you will not be able to pursue the careers or basic things that you would like to do. Education is sort of like freedom. Like the quote says, education is the key to unlock that door of freedom that everyone would like. Another thing that this quote could mean, is that others could judge you by the type of education that you have or had. This quote could also mean something specifically to the person who said it, who was George Washington Carver.

Below are more George Washington Carver quotes:

http://thinkexist.com/quotes/george_washington_carver/

Procedure

Procedure for separating a mixture.

   Procedure:

1.     Take out the toothpicks from the mixture with your fingers, put it aside.

2.     Line the funnel with filter paper, put mixture and the funnel in the beaker.

3.     Pour mixture into funnel to extract or separate water from the rest of the mixture.

4.     Take out the filter paper from the funnel, Use magnet to extract iron fillings from the dirt.

5.     Boil the beaker with water on it on a hot plate. Turn on the hot plate, leave it there until water starts to boil and water has evaporated and salt is left.

6.     Clean up.

The seven items in the mixture were: water, salt, dirt, beans, iron fillings, marble rock, and tooth

Frog Dissection

  In science class, we had to dissect a frog to see the internal organs and to understand how the different organs work. We were given a frog, and we had to cut along the mid line of the body. Once we opened the frog, we could see all of the organs the frog had. The frog that we were given was a male, so we didn't have to take out all of the eggs. We had to remove the fat bodies. At first, they were very hard to get them out, but we eventually got all of them. As soon as we got the frog open, we could immediately see organs such as the liver, the heart, and the stomach.
  On the next day, we were able to examine and take out all of the organs in the frog. After we saw all of the organs, we had to know what each of the organ does to help the frog. I think that this was a fun dissection to do and I hope that we are able to do more like these in the future.

Lab Response: As the Stomach Turns

In science class, we did a lab. The purpose of this lab was to see what conditions are needed for the digestion of proteins in the stomach. We needed a lot of supplies for this lab, including a test-tube rack, test-tubes, pepsin, water, cubes of boiled egg whites, and many more. On the first day, we labeled 4 test tubes A, B, C, and D, and put 3 pieces of egg white in each of them. In test-tube A we put pepsin. In test-tube B, we put pepsin and water. On C, we put hydrochloric acid. Finally, we put pepsin and the acid in D. Test-tubes A and B had immediate reactions, while C and D didn't. The litmus colors were purple for A, blue for B, and pink for C and D.
On day two, we saw that nothing happened to A, B had dissolved to the bottom of the test-tube, and nothing much happened to C and D. The litmus colors were all the same. The only difference was that B's color was purple rather than blue.

Lab Response: Chicken Wing Dissection

This week in science class, our teacher dissected a chicken wing. The purpose of dissecting the chicken wing was to see all of the muscles/tissues that was in the chicken and relating  it to our what is in our body and how they help our body move. While my teacher was dissecting, she would call us up and show us the different types of bones and what they classify into. I think that his was a good way to learn and remember about the different bones/tissues/muscles in the body. I hope that we can do something like this again.

Diffusion Lab Quiz

The purpose of this lab was to observe the diffusion of a substance across a semi-permeable membrane. Diffusion is a process by which molecules move from an area to a higher to lower concentration. Also, the lab had an example of osmosis. One prediction that was made was that the concentration (iodine solution) would go through the plastic baggie and change the color of the starch inside of the baggie. The beaker with the concentration in it was more hypertonic than the baggie, which was more hypotonic. Hypertonic means that it is a solution with a greater concentration than another. Hypotonic is the opposite of hypertonic.  

            This procedure was just like a cell. When the starch and the concentration met, the water and concentration were like nutrients to the cell. The starch is the organelles, and the baggie could act as a cell wall. After we put the baggie filled with starch in the concentration, we had to wait fifteen minutes so we could see how the concentration affected the baggie. In the end of the fifteen minutes, the baggie turned purple, when it was originally white.

            This lab had a lot of connections to everyday life. My first example is if you put a juice mix such as Kool-Aid into a glass of water. This is just like when the iodine came in contact with the starch. My second example is a balloon filled with air. Another example is a fire place when it is filled with fire. My last example is when you bake cookies and the smell goes into the air, this is like the lab because the smell is affecting everyone. 

Lab Response

This lab was a very fun experiment. At the very beginning, we had to put on safety goggles. First we had to fill our plastic baggies with water and starch. After we tied the baggies around, we had to fill our beaker with concentrate and water. Then we put the baggies in the the beaker. At first, the color of the bag was white and the color of the beaker was tan. After fifteen minutes, the bag turned kind of purple. This lab is very fun so far and I hope that we could do something like this again.