Alex

Week 1 April 13, 2009 1. This week in science I learned about how to draw bohr models. If the atomic number of the element is 14, that's how many protons that you will have in the nucleous. It the atomic mass is 29, you have to take 29-14 witch equals 15, so then you have 15 neutrons in youe nucleus. Also, the outer energy shell is called a valence shell which shows whether the atom will more likely gain electron or lose electrons.

2.Another thing that I learned about this week was about the periodic table. Dimitri Mendeleev created the periodic table of the elements. They are divided into groups, periods, and many other categories. The element can eaither be a metal, metalloid, or non metal. I learned that you can tell how many electrons will be in the valence shell of the element depending on what group it is located in.

Question: Why are the transistion metals grouped together as one group?

Week 2 April 17, 2009 1. This week in science class we did a lab about elements. We tested nine different elements to see if they were malleable, or brittle and if they were good conductors of heat and electricity. We also had to look at the element and tell what it's color and luster is. Another thing that we had to test during the lab was if the element would react with HCl (hydrochloric acid.) I learned a lot about the elements during this lab.

2. Another thing that I learned about this week was about compounds. I learned that a compound is a combination of two different elements. I also learned how to write the formula of some of the common compounds. We learned what a subscrpit and a super script were and what they stood for in the formula. A super script is the number in the upper part of the formula and a subscript is the number in the bottom of the formula. The superscript is bassed on ions; whether the element will gain or lose electrons (the charge of the element). The subscript shows how many atoms there are in the element.

Question: Are pop cans made of alluminum? If so could you put the lightbulb (thing that you used to show the conduction of electricty) on the can and it would light up?

Week 3 April 23, 2009 1. This week in science class we learned about the different forms of energy. There are to main types of energy; potential and kinetic. Gravitational, stroed mechanical, chemical, and nuclear are all types of potential energy. Thermal, radiant, sound, motion. and electrical are all types of kinetic energy. We made a web about these different types of energy forms for our notes.

2. We also learned how to balance equations so that they make sense and about conservation of matter (mass). We did a lab about conservation of matter that helped us explain the law of conservation of matter. The law states that "Matter can neither be created nor destroyed by ordinary means. It can olny change forms." This is one of the main topics that we covered this week in science class.

Question: Do tables consist of energy? If so, what kind?

Week 4 May15, 2009 1. and 2. This week in scince class we disected frogs. We did the external, internal, and uroenital anotomy o the frogs. When we did the external we had to get their eyeballs and tongue out. During the internal disection we had to look around for different parts ofthe frog. We looked at most of the organs including the liver, heart, small intestine, large intestine and stomach. We had to open up the stomach to see if the frog had eaten anything, unfortunatey christian and mine didn't have anything in his stomach. Mali and Savanna had three beetles and a bunch o other bugs in their frogs stomach. We also had to successfully remove the small intestine. During the Urogenital lab, we had to examine the reproductive system and figure out whether our frog wa male or female. We also had to locate the bladder and kidneys and tests if it was a guy, and we had to find the oviducts. To me this experience was really cool and I hope that the students in the future will get this experience.

Question: Why do frogs only have one hole where wate products and undigested stuff come out?