The Ruining of Sugar

States of Matter: Part 2

Materials used: Sugar
                         Beaker
                         Buntzen Burner
                         Cup with Water
                         

In school we performed a lab relating to sugar. First we got a sugar cube and licked it. It tasted sweet. We were also supposed to observe it. It was hard, white and cubicle, unlike the marshmallow. Then we had to crush it and dissolve it into the water. It tasted like tea.

Our next lab involving sugar was to burn it. We observed it and crushed it, just like the previous one. However, this time we burnt it over the Buntzen Burner. It turned black, just like the picture. After it cooled down, our teacher, Mrs. Rousseau, had to break the beaker to get the sugar out. It was black, hard and sort of like a crystal now. Next we were instructed to taste it. It tasted bitter and disgusting, just like the burnt marshmallow, except worse.
As we burnt the sugar, only one item was left...... carbon. The carbon caused the bitter taste. That was a chemical change. The purpose of this lab was to observe a chemical change and physical change, and to show the difference between them. We were also supposed to seperate a mixture. This lab showed how chemical change can affect an original item. That is why we experimented with this lab.

States of matter

Part 1: Marshmallow

Materials used: Buntzen Burner
                           Small Marshmallow
                           Large Marshmallow








 In class we observed different states of matter by burning a marshmallow. First however, we were given a small marshmallow. We had to observe it first. I concluded that it was small, white, and soft. Then we were instructed to taste it, which in my opinion, I enjoyed. I wrote that it was sweet and soft. Then, we received a large marshmallow, observing it as well. It was big, soft and white. Next, we had to burn the large marshmallow over the buntzen burner. We were instructed to eat the burnt part first. In my opinion, it was bitter and impossible to bear. However, the inside was heaven.

The reason we experimented this was so we could tell the difference between chemical and physical change. We were also supposed to observe the marshmallows change in matter. If I had kept on melting the marshmallow, it would have changed from solid to liquid. I believe we were supposed to realize that even though it was a minor part of this experiment. Due to this, I conclude that this lab was to help us observe matter and physical and chemical change. Possibly to relieve our appetite and help us remember also :)

NI HAO! ITS CHINESE NEW YEAR

ALMOST CHINESE NEW YEAR! YaYYYYYYYYYYYYYY

The 7 items

Just to tell you, my group did not find all 7 items.......


In this project, we were learning about homogeneous and heterogeneous materials. Homogeneous items are things that can't be physically seperated. Heterogeneous items are things that can be physically seperated. To learn this, we were given an unknown liquid with items inside it and were told to name all 6 of them. The materials we received included a graduated cylinder, beakers, funnel paper, a cone, a magnet, and a stove like item. Later, my teacher told us she was mistaken and there were 7 items.
First, we poured out the water into a large beaker, seperating the other items from it by putting them on the funnel paper. From the start we could tell a few items. We could see toothpicks, pebbles, a rock, beans and a seaweed like substance. However, as soon as you use the magnet on it you should see that it is metal filings. I found some salt on the paper while examining the paper, keep that in mind as that was a waste of time.
Later, we put the large beaker on the stove, and waited. After some time, we realized that the dissintegrated material was......salt? Apparently, that lone piece of salt was a misdeamer, as it just came out of the water. In the end we only came up with 5 items out of the 7. Even though we didn't succeed, we learned that the salt water was homogeneous and the rocks and other items were heterogeneous. So in the end even though we didn't succeed, we learned something. Peace.

Frog Dissection

In Class we dissected a frog. As we dissected, a foul odor,(however not as bad as the worms)came out of the frog. We had to cut apart muscle and I was forced to break the frogs arms so we could pin it down. After that, the inside was very interesting.

Our frog was a female, as we could tell from the eggs. the eggs were greyish blackish and were slimy. We had to remove the eggs to see the other essential organs. At first glimpse, you would see the 3 lobe liver. Then you would see the stomach. While we were dissecting, our group found some spaghetti like strands in the frog. Those are fat bodies, which are basically just fat. We had to remove that to.

The frogs stomach was a organ that our group cut open. Mrs. Rousseau told us that sometimes the stomach would contain pieces of undigested food, such as flies. Unfortunately, our frog was dead hungry.

I wonder why there were so many eggs in the body. I also wonder how many of them die before birth. I also want to know what is the significence of the 3 lobe liver. What is the difference between the human and frog body, based on internal features. Why is the frogs skin green/brown. There are so many questions, and a lot of them may be answered.

The Circulatory System