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2/27/2014: Notebook Assignment #1
You are going to be using 4 pages of the notebook. You will not use the entire page in the notebook, and you will not be writing on the left hand side of the notebook...yet. Set up: On the right hand side, title the page "John Dalton and the Atom". Set up the page Cornell Style. Read the passage about John Dalton. As you read, write down any notes about the reading (such as who he was and what he is famous for) in your notebook. After you are done reading and taking notes write the reading comprehension questions. Write them where we usually write vocabulary words and questions for the notes. DO NOT ANSWER THE QUESTIONS- instead, read your notes and underline the answer. If you have taken good notes you should have all the information there to answer the question. Underline or highlight those answers in your notes. |
John Dalton and the Atom
John Dalton was an English chemist. His Ideas form the Atomic Theory of Matter. Here are his ideas: 1.) All elements are composed (made up) of atoms. It is impossible to divide or destroy an atom. 2.) All atoms of the same elements are alike. (One atom of oxygen is like another atom of oxygen. 3.) Atoms of different elements are different. (An atom of oxygen is different from an atom of Hydrogen) 4.) Atoms of different elements combine to form a compound. These atoms have to be in definite whole number ratios. For example, water (H2O) is a compound made up of 2 atoms of Hydrogen and 1 atom of Oxygen (a ratio of 2:1). Three atoms of hydrogen and 2 atoms of oxygen cannot combine to make water. Reading Comprehension Questions Remember- do not answer the questions, read your notes and underline the answers as you find them IN YOUR NOTES What is the name of his theory? What are elements made of? An atom of hydrogen and an atom of carbon are ___? What are compounds made of? The ratio of atoms in HCl (Hydrochloric Acid) is...1:3? 2:1? 1:1? |
J.J. Thomson and the Electron
J.J. Thomson was an English scientist. He discovered the electron when he was experimenting with gas discharge tubes. He noticed a movement in a tube. He called the movement cathode rays. The rays moved from the negative end of the tube to the positive end. He realized that the rays were made up of negatively charged particles - electrons. Reading Comprehension Questions Remember to Underline in your Notes What did J.J. Thomson discover? What is the charge of an electron? What are cathode rays made of? Why do electrons move from the negative end of the tube to the positive end? What was Thompson working with when he discovered the cathode rays? |
Ernest Rutherford and the Nucleus
Ernest Rutherford conducted a famous experiment called the "Gold Foil Experiment". He took a thin sheet of gold foil. He used special equipment to shoot alpha particles (positively charge particles) at the gold foil. Most particles passed straight through the foil like the foil was not there. Some particles went straight back or were deflected (went in another direction) as if they had hit something. The experiment shows: 1.) Atoms are made of a small positive nucleus; a positive nucleus repels (pushes away) positive alpha particles (like charges repel each other, opposite charges attract). 2.) Atoms are mostly empty space. Reading Comprehension Questions What is the charge of an alpha particle? Why is Rutherford's experiment called the gold foil experiment? How did he know that the atom was mostly empty space? What happened to the alpha particles as they hit the gold foil? How did he know that the nucleus was positively charged? |
Niels Bohr and the Planetary Model of the Atom
Niels Bohr was a Danish physicist. He proposed a model of the atom that is similar to the model of the solar system. The electrons go around the nucleus like planets orbit around the sun. All electrons have their energy levels- a certain distance from the nucleus. Each energy level can hold a certain number of electrons. Level 1 can hold 2 electrons, Level 2 can hold 8 electrons, Level 3 can hold 18 electrons, Level 4 can hold 32 electrons. The energy of electrons goes up from Level 1 to other levels. When electrons release (lose) energy they go down a level. When electrons absorb (gain) energy, they go to a higher level. Reading Comprehension Questions Why could Bohr's model be called a planetary model of the atom? How do electrons in the same atom differ? How many electrons can the fourth energy level hold? Would an electron have to absorb or release energy to jump from the second energy level to the third energy level? For an electron to fall from the third energy level to the second energy level, it must _____ energy. |
2/28/2014: Notebook Assignment #2
Scientists use all sorts of models to help explain their ideas. They also make models to try out designs on a small scale before building something that will be very large and expensive. If the model works well, they can use it to raise the money they need to build the true thing. Conversely, If something is too small to see easily, scientists may make an enlarged model so that they can manipulate it easily. This may help them figure out how the smaller thing behaves. Another way that scientists use models is to make predictions about the future.
Each of the scientists above created a model of the atom based on their discovery and previous discoveries from other scientists. From what you know about their discoveries, try to match each scientist to their model.
Draw their models and the model name associated with each scientist in your notes on that scientist.
Scientists use all sorts of models to help explain their ideas. They also make models to try out designs on a small scale before building something that will be very large and expensive. If the model works well, they can use it to raise the money they need to build the true thing. Conversely, If something is too small to see easily, scientists may make an enlarged model so that they can manipulate it easily. This may help them figure out how the smaller thing behaves. Another way that scientists use models is to make predictions about the future.
Each of the scientists above created a model of the atom based on their discovery and previous discoveries from other scientists. From what you know about their discoveries, try to match each scientist to their model.
Draw their models and the model name associated with each scientist in your notes on that scientist.
3/4/2014: Quiz
Quiz#1: History of the Atom
This quiz contains information on each of the scientists, their discoveries, and their Atomic Models. It also has the first 10 elements and their names/symbols. It is 30 questions: matching, true and false, and multiple choice. The access code will be given to you in class.
3/26/2014: Quiz
Quiz #2: Electron Configurations and Periodic Properties
This quiz is an open note quiz that contains material from Chapter 5 sections 2 and 3. The access code will be given to you in class.
Quiz#1: History of the Atom
This quiz contains information on each of the scientists, their discoveries, and their Atomic Models. It also has the first 10 elements and their names/symbols. It is 30 questions: matching, true and false, and multiple choice. The access code will be given to you in class.
3/26/2014: Quiz
Quiz #2: Electron Configurations and Periodic Properties
This quiz is an open note quiz that contains material from Chapter 5 sections 2 and 3. The access code will be given to you in class.
Notebook Assignment #3Go to the following website and take notes from the animation. Add these notes to "Rutherford and the Nucleus" in your notebook.
Rutherford's Gold Foil Experiment |
Lab 1Using the background information that you have gathered about the Gold Foil Experiment it is now time to try it on your own. Read through the instructions show here. Go to the webiste for Rutherfords Scattering and complete Excercises 1 and 2 using the animation. Answer all of the questions in your notebook.
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Review for Unit 5 Test: Part 1Read the article entitled Atomic Theory I : The Early Days by Anthony Carpi, Ph.D. You may use the link or download the file located at the end of this assignment.
Review Quiz Take this Quiz when you are ready Atomic Theory 1 Quiz Access Code: MA94L |
Review for Unit 5 Test: Part 2Read the second article entitled Atomic Theory II: Ions, Isotopes and Electron Shells by Anthony Carpi, Ph.D.
Do the 'Bohrs Atom: Quantum Behavior in Hydrogen' simulation. Review Quiz Take this Quiz when you are ready Atomic Theory 2 Qu |
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| Atomic Theory Article by Anthony Carpi Ph.D. |
| Simulated Hydrogen and Helium document |
Nuclear Chemistry
Where did all these elements come from?
What about New Elements?Read the following articles on new elements. Annotate the articles and write a summary essay for each.
Search for Element 113 Concluded at Last Chemical Element 114: Heaviest Element Created Scientists Propose New Names for Elements 114 and 116 Nuclear Missing Link Created At Last: element 117 |
Isotope WorksheetsPrint and complete these worksheets on isotopes or fill in the answers and submit the worksheet through this site. Use your book and class notes to complete these worksheets.
Isotope LabBeanium Isotope Lab
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Isotope Quiz
Access Code: |
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Extra Credit for Unit 5
Choose one of the following projects
Project must be completed and turned in 3 days before the end of the quarter.
April 2nd deadline for extra credit.
Project 1: Museum BookCreate a Museum Book on the Model of the Atom. Follow the power point presentation to construct your museum book. If you would like to you can print out 4 pages of the template to help you create the book. Use the rubric to help you organize the matrial that you will be adding to the project.
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Project 2: Time Line
Make a timeline using all of the scientists and discoveries that you have read about. Use your notebook and any other outside resources that you find to create an organized and creative product.
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