Pd+1+Group+2

Marking Period 3 1/28/11 Surface Tension __ ﻿ __ * Surface Tension is a measurment of the cohesive energy present at an interface.

Facts on Atoms
 * All matter is made of elements.
 * An atom is the smallest piece of matter and cannot be commanly broken down.
 * Electrons are small particules located outside the nucleus and have a negitive charge.
 * Atoms are NOT simple common spheres.
 * An electron cloud is the region where electrons would probably be found swirling around the nucleus.

__Atoms Party__ So todays all the scientists are having a stoms party. Every scientest has to bring food that represents their discovers. Dalton brought munchkins donuts to represent the solid form. thompson brought chocolate chip cookies to representthe electrons. rutherford brought foshnauts to represent the atoms and the hole represent the nucleus. Bohr is bringing the three teired cake to represent the energy levels. Then Schrodinger and Heisenberg are bringing life savers to represent the electron clouds. Decorations will be disco balls to represent the atom, we will also have the gold foils to represent the experiment made by Rutherford. Some games will be darts to represent the atom that bohr had discovered. There will also be a make to represent that there is no certain way that the electrons in the atom move. There will also be lazer tag to show that the electrons move around so fast.

These Graphs here show electron clouds.


 * Layer 1 || Layer 2 || Layer 3 || Layer 4 || Layer 5 ||
 * 3 marks || 20 marks || 28 marks || 30 marks || 17 marks ||

====Hi there! Welcome to our lab group page! In this lab group there are Alexis, Danielle, Taylor, and Alyssa! In this lab we measured density. Our question is how does the density of water compare to the density of solids. We measured Rubbing alcohol, Methonal, and pennies.==== ====So we answered some questions and the first question was, Why do boats float even though they are made of materials denser then water? The answer we got was the boat pushes down on the water, and the water pushes up harder then the boat pushes down so then the boats float. A boat floats when it has displaced just enough water to equal its own original weight. This is the website we got the information from []. The next question is Explain how density could be used to determine if a crown is made of gold? You figure out how dense gold is and then find the density of any crown.====

in a liquid is lifted up by a force equal to the weight of the liquid." The other qestion that we had was "Who was Archimedes, and how did he come up with the princible?"
====The answer we got was pretty crazy! Archimedes was a greek mathematican, scientist, and engineer. He discovered Archmedes princible in the bathtub. When he did he jumped out of the bathtub and ran up and down the street screaming he found it.====

DV: Tempature
__December 14, 2010__

Question: Why does rock salt lower the temperature of water. Answer: There is less heat, so now the ice can capture molecules. [] This link shows you to a diagram of the ice cube going through the process.