Pd+1+Group+1

google doc on radioactivity: []



Marking Peirod 3 Atom Party: 2/7/2011 Rachel and Julie The Party The doors open wide as the people get an amazing shock. Seven scientists from the past walk into the room. In this group there was Democritus, Dalton, Rutherford, and Thomson. Also included were Bohr, Schrodinger, and Heisenbrug. Each brought a wonderful dish to remind us of their discoveries. Thomson brought Chocolate chip ice-cream representing the electrons found in the atom. Rutherford brought some cranberries that reminded the crowd about the nucleus he discovered. The wonderful Dalton brought M&Ms for the small solid atom he found. Democritus showed off a plate of spaghetti representing his knowledge of first thinking about the atom. Bohr brought plates of danish to show off his Danish heritage. But the hit of the party was the cotton candy from Schrodinger and Heisenburg to remind the partiers about the electron clouds in modern theories. Set aside from the glorious food there were also decorations. Streamers filled the room honoring the paths of atoms in Bohr’s model. There were also plenty of balloons showing the importance of the nucleus in the atoms. Rutherford’s golden foil model was also not forgotten. Golden table cloths covered the large tables gracefully. A fog machine replaced the thought of electron clouds in the modern day models. Games rounded the late night. The scientists all enjoyed the game of pin the nucleus to the atom and Atomany, the atom version of Pictionary. As the crowds say farewell to the amazing scientists of the past, it is safe say these people will never forget an atom’s history.

**Atoms Party by Danae and Alex** **Once upon a time there were six Scientist trying to plan a party. Their names were, Democritus, Thompson, Bohr, Rutherford, Dalton, Schrodinger, and Heisenberg. As they were planning the party they realized that they need some food. Each of the scientists decided to bring a food that represents there discovery.** **Thompson said “I shall bring some chocolate chip cookies to represent the electrons that I think are in the atom.”** **Democritus said “I would love to bring some M&Ms to represent what he thought an atom looked like.”** **Dalton said “well I would be happy to bring some apples to eat at the party. That would represent my thought of a solid atom.”** **“I would be delighted to bring blueberries that would represent electrons” said Rutherford.** **“What would you like to bring to the party Bohr?” asked Rutherford.** **“I would like to bring some Danishes to represent the energy levels” answered Bohr.** **Schrodinger and Heisenberg decided to bring some wiped cream to represent the electron cloud. They were done with deciding about the food and now they would need to decorate the place for the party. We decided to decorate with a fog machine to represent the electron cloud, streamer’s to represent Bohr’s model, and dots to represent atoms. We are also using balloons to represent the nucleus. We’re going to play lots of games also. Some games were playing are, name the parts of the atom, pin the nucleus on the atom, and where is the atom. That is the end of our lovely story on party planning.**


 * 1/28/11- notes on atoms **
 * · Pure substances are matter made of one material with definite properties. **
 * · Element is a simple pure substance that can be changed into a more simple substance (aluminum, iron, copper, and silver) **


 * · Dolton’s theory had 4 parts **
 * o 1- all matter is made of atoms that can be combined **
 * o 2-Atoms of the same element are exactly alike **
 * o 3-Atoms of different elements are different **
 * o 4- atoms of two or more elements can be combined to form new substances **
 * · Compounds are pure substances made of more than one element (water, plastics) **
 * · Molicules are two or more atoms with specific properties that have bonded together(smallest part of compound that is still called a compound) **
 * · Chemical symbols are one or two letters used to represent an element **


 * marking period 2:**
 * Our names are Alex, Danae, Rachel, and Julie. Something we all have in common is we all enjoy eating at Boston Market. **


 * __ Density Lab __**


 * ** For the denstiy lab we are testing methodal, water, and a rectangular prism. **
 * ** We are doing two trials for each denstiy.﻿ **
 * ** Question- How does the density of liquids of the water compare with the density of the other liquids and solids. **
 * question lab: 10/29/10 **
 * ** Explain why 11% of an iceberg is visible above water? **
 * This is because it has to push 89% of there volume in water to create **
 * enough buoynt force to float. **


 * ** Explain why regular soda floats and diet soda sinks. **
 * diet soda floats because the sweetner is sweeter then suger so they don't use as much making it less dense. regular soda is more dense than diet because of the suger content there fore it sinks. **


 * ** The reason why when shake a can of soda and it explodes is when you shake the can **
 * it causes carbon dioxide bubbles to line the walls of the can. When you open the can the pressure goes down and the bubbles go up. The quickly expanding bubbles forces the liquid to push up over the can. this explains Boyle's Law. **
 * __Pressure and Volume Lab:__**
 * Here is table that models what happens when you put pressure on air.**
 * __Boiling Water Lab:__**


 * Boiling Different Volumes **
 * Question: Does the volume of water effect the time it will take for it to boil? **
 * Hypotheisis: Yes it will because there is more water to heat up. **
 * Independant variable: The volume of water. **
 * Dependent Variable: Time it takes to boil. **
 * Constants: Thermomiter, starting time. **
 * Expirement: **
 * Today we will put two diiferent beakers of water with different volumes on hot plates. We are measuring how long it will take for each to boil. the first trial we did 50 and 100. we notisted that the second trial for both took less time for it to boil becuause the hot plates were already hot and that effected the time to boil. **
 * Hot and Cold lab **
 * Question: what happens to the tempurature of water when a different volume mixed with different tempuratures? **
 * Hypotheisis: when they are mixed together the tempurature will be even colder. **
 * Independent Variable: The volume and tempurature of water. **
 * Dependent Variable: the tempurature at equalibriam. **
 * Constants: Same hot pot, The same tempurature sencer. **
 * Procedure: **
 * 1. Heat up the water in a hot pot. **
 * 2. measure the tempurature of the cold water (more volume) **
 * 3. measure the tempurature of the hot water. **
 * 4. combine the hot and cold and measure the tempurature. **


 * Question: Whysoes salt lower the tempuratureof ice water? **
 * [] **
 * Experiment: Q: why does salt lower the tempurture of ice water? **
 * A: the salt gets in the way of ice freezing. **
 * Steps: 1.the tempurature started high **
 * 2. the temp.went down **
 * 3.added salt ajnd temp changed **
 * 4.temp. went down to negative numbers **
 * 5. ice is melting **
 * 6. water is freezing **
 * 7. senser stuck in ice at bottom **