Chicken Disection

Just recently in our class we dissected a chicken. I know it might said disgusting because even at one time I thought it was disgusting too. But I learned a lot from this dissection which totally changed my opinion. I learned that there is a big difference between the human body and the animal body and the main difference is that our body is way more complex. One reason how I know that is that when you move an animal's muscle it's body will move.Amazing right! But when we try that with our own bodies that won't happen or that would have made our lives way easier. I happy I did this because know I know this difference between our bodies! 

Diffusion Lab

The purpose of the lab was to help us understand the cell membrane inside and outsides. We also learned a key word called diffusion. It is a making a substance that is like a strong chemical and less concentrated. While this is happening molecules try their best to make more space. For example, if we ask two units to fit in one class room they will feel squeezed and whenever the door opens we will all try to get more room. Same with the molecules, they will try to get more space similar to us human beings. Water is a key thing that supports diffusion and it makes the chemicals more diluted and in conclusion it makes the chemicals weaker. Dilution also makes it less concentrated because of osmosis. Osmosis is the movement of the water molecules. Some other words we learned in class were hypertonic, concentration, indicator, and dilute. Hypertonic means high concentration. Concentration means the amount of a substance per defined space. The word dilute means to make it less concentrated. Indictor means a chemical detector for other particles.

In the experiment in class we learned that when we put corn starch in a bag and put it in iodine it turns purple. The cause of this was the permeable membrane. This means to penetrate through the pores, interstices, etc.  It let the iodine pass through the bag into the cornstarch which showed signs of low concentration. Similar to the cell membrane because it controls what goes in and comes out of the cell just like how the permeable membrane let the iodine passes through the baggie. But the difference is that the permeable membrane lets the iodine pass through and the cell membrane lets food and water pass through.  It is important to know how our body works it could decide a better future for ourselves.

One connection that I can make to life is that when a city or state becomes way too populated they try to expand their country. For example, the thirteen colonies. Another connection is if you put water in a cup and knock it down every will rush out. One more connection is when a group of people exit a roller coaster or a movie everyone rush out of a movie theatre or ride, leaving room in the theatre/ride for the next group. Last and not least is that if you are playing basketball all the air just rushes out.                    

Lab Report

Today during the lab I learned that when you put starch with iodine it turns the startch purple. I also learned that if the baggie is a little bit open substance can easily enter the baggie. Even with the tiniest open, substance can easily enter and leave the baggie. I noticed that there was high concentration because I saw tiny purple dots on the baggie.The plastic bag from the experiment acts like the cell membrane, letting in substances that fit in and not letting in other substances that do not. 


I hope we do more lab experiments in the future!
Thank you Ms.Rousseau