Science at Bangor & in the News
We performed 2 different experiments this week in chemistry. Our first experiment looked at 5 different types of chemical reactions. We were able to perform one set of experiments in lab, I demonstrated another, and we used a YouTube video from a friend to view the other 3 types of experiments. Two of our previous labs were also examples of one of the types of reactions. The next day, we talked about when we actually use some of these reactions in our daily life. After some thinking, we came up with good examples of the different reaction types. Our second lab let us observe & feel the difference between endothermic reactions and exothermic reactions. Endothermic reactions need energy put into them to make them happen. We observed a reaction that used the thermal energy from the room temperature water to happen, so we could see (with a thermometer) and feel the reaction tube get colder as the water transferred its energy to the compound. An exothermic reaction is just the opposite; it releases energy into the surroundings. We saw & felt the reaction tube get warmer as the reaction happened. Most people are familiar with exothermic reactions: the reason we feel warm next to a fire is that the combustion reaction that causes the fire gives off it's extra energy & raises the temperature around the reaction. On Thursday we wrapped up our forces unit in Science 9 by testing our egg protection containers. Mrs. Doe kindly let us drop the containers from the marching band viewing tower. It was a great day to spend some time outside & drop some eggs. All of the eggs survived the fall, although we did lose 1 egg on extraction. The containers all had some common themes, but there were also differences among them. It was great watching the students use their knowledge of forces and collisions to creatively come up with a solution. The last unit we are covering is looking at motion. We started the unit on Friday by measuring how far a toy buggy went in a certain amount of time or how long it took the buggy to travel a certain distance. The weather actually cooperated and we were able to test the buggies outside. We haven't looked at the data yet, but we will refresh our graphing skills starting on Monday when we start analyzing the data.
0 Comments
Your comment will be posted after it is approved.
Leave a Reply. |
Ms. Lyons
Science is amazing, check it out! Archives
May 2016
Categories |