Savanna

Week 4 One thing i learned about the frog dissection is what dorsal and ventral side of the frog means. Dorsal means the back side of the frog and the ventral side means the stomach. i also learned that the frog has a nictitating membrane which protects it's eyes from the water when hego into it. Another thing i learned about the frog dissection was most of the parts of the frog. such as the liver, the function of it is a organ of digestion. it is the largest structure of the body. i also learned that the heart of the frog has only three chambers, and we have 4. One question i have this week is was why our frog did not digest the beetle in the intestines? Week 3 April 23,2009 One new thing i learned this week was Conservation of mass. We did a lab on it, and first we put vingar and baking soda into a flask and weighed it. Then we mixed the vingar and baking soda and let it bubbled, after it was done reacting we weighed it again and it had lost some weight because nothing was holding it in. Another thing i learned this week was other lab, that we did out side. We put the head of matches into a jar and weighed the jar and the head of matches, then we went outside to use the sunlight to make the matches start on fire then we weighed the jar again to see if it weighed more or less then it did the first time. One question that i had for this week is balancing equations, i get it but i am still a little unsure about it.

Week 2 April 17,2009 One thing that i learned this week was that metals conduct high energy level. In the lab that we did, we tested the coduct of  electricity, most of the elements did conduct electricty, such as lead, copper, zinc, bismuth, artimony, aluminum, and mangnesuim. Th.e elements that don't are sulfur and carbon and those are both nonmetals. Another thing i learned this week was about the periodic table of elements. There are three compounds which are metals, nonmetals and metalloids. most of the elements are metals. the table also contains solid, liquids, and gases. One question i have is how much metals does metalloids contain on average? Week 1 April 13,2009

One thing i learned last week was how to make a bohr model. First the atomic number is protons and the atomic mass is the neutrons. Then the electrons is the same as the atomic number. What ever period of the element is in thats the number of valence shells around the protons and neutrons.The first valence shell can only hold two, and the second valence shell can hold eight, and the third valence shell can hold eighteen.

Another thing i learned last week was about electrons. Electrons are negatively charged