Zach

4/17/09 Week 2 This week I learned about how some metal have ductilty and others don't. Many metals are good conductors of eectricity. Many don't react with acid, but there is still many that have reactions with acid. I learned about what compounds are made of. Compounds is 2 or more combined elements to form a ne substance.Sodium even reacted with plain water. It began to smoke and give off an odor like it was on fire. Sodium is a very reactive metal. It'll react with just about any other element.

April 13, 2009 Week 1 I learned about the shape of an atom. It has a nucleus of protons and neutrons. The atomic mass minus the protons tells you the number of neutrons are in the neucleus of the atom. Then there are electrons that spin around in circles on rings called valence shells. The electrons are in an empty space. The electrons have a negative charge after J. J. Thomson made a glass tube and put magnets with a positive charge on the bottom and one with a negative charge on top. When he put the elctrons through the tube they went towards the postive charged magnet.

April 23, 2009 Week 3 This week I learned that when gas has no where to go it keeps the massof the object the same. Carbon Dioxide acts as helium because as shown in the last lab. Trial 2 showed that when the balloon filed up with Carbon Dioxide it slighlty lifted a couple grams off of it. Also I learned that when the reaction of Vinegar and Baking Soda is hard to stop. I learned the different types of energy like Kinetic is Energy of motion and Potential Energy is Energy that is Stored.

May 15, 2009 Week 4 Thi week I learned about frog biology. I learned that male and female frogs have vestigial oviducts that have no function in males. I also learned hat the frogs livers have three cambers in them. Under the livers there ae gall bladders that store bile. Bile is needed for the breaking down of fats.Frogs have two sets of teeth that help to keep it's food in it's mouth snce it swallows prey whole. The two sets of teeth are called Maxillary an Vomerine. Frog lay their eggs in masses.