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Atomic Structure

Atomic Structure. Ms. Millimet August 19, 2014. Entrance Procedure – Reminder!. Walk in classroom silently Pick up papers that you need from side table then walk to your seat (Keep walking forward, do not turn around) Check board and Sit down at your desk.

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Atomic Structure

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  1. Atomic Structure Ms. Millimet August 19, 2014

  2. Entrance Procedure – Reminder! • Walk in classroom silently • Pick up papers that you need from side table then walk to your seat (Keep walking forward, do not turn around) • Check board and Sit down at your desk. • Write down homework in your planner. • Take out have-outs: Science Stud Buddy (Binder), papers for class, pen/pencil • Put homework in the top of the table from last night • Start DO First • 5 minutes to work on do first, silently and independently • On top of your guided notes!

  3. Objectives • SWBAT explain the location, masses and charges of protons, electrons, and neutrons. • SWBAT compare and contrast the nucleus with the electron cloud. • WHY? • Atomic structure explains all of the materials and substances we have in the universe • Atomic structure is basis of chemistry and the rest of our unit! • Earn commended on STAAR and reach our growth goal on Cas!

  4. Atomic Structure - Nonfiction Reading • Read through the passage in pairs. • Fill in the table below (use pencil in case you want to change answers!) • Note: Wait on Mass – Will learn as a class 

  5. AMU = atomic mass unit = 1 proton or 1 neutron

  6. Atomic Mass (an atom’s mass) is calculated by… • Protons + Neutrons

  7. So, how would we draw an atom? • Nucleus is in the center. Nucleus is very tiny and very dense. • Electrons orbit in the electron cloud. They are at different energy levels. Electron cloud is mostly empty space and is very large.

  8. Check Yourself! • Which statement is NOT true? • A proton is positively charged and located in the nucleus • A electron is negatively charged and located in the electron cloud • A neutron is negatively charged and located in the nucleus? • Which statement(s) correctly compares the mass of 2 subatomic particles? • A proton has less mass than a neutron • A proton has less mass than an electron • A proton has more mass than a neutron • A proton has more mass than an electron • A proton has the same mass a neutron • A proton has the same mass as an electron

  9. Guided Practice: Answer the questions on guided notes with your table group. Table Managers: Read question out loud, ask peers for ideas/answers/evidence! Stop when you get to “Try On Your Own.” Vocabulary Box: • Proton: Positively charged subatomic particle located in nucleus with a mass of 1 AMU • Neutron: Neutral subatomic particle located in nucleus. Has no charge and a mass of 1 AMU (Neural/ no charge, nucleus,) • Electron: Negatively charged subatomic particle located in the electron cloud with no mass. • Nucleus: Center of the atom. Contains nearly all the mass of atom. Very dense and contains protons and neutrons. • Atomic Mass: total mass of atom = # of protons plus # of neutrons • Atomic Mass Unit: same as one proton or one neutron

  10. Guided Practice Answers: • 1. What is an atom? A tiny particle that makes up all matter • 2. What are the two main regions of an atom? The nucleus (center) and the electron cloud • 3. Which subatomic particles are found in the nucleus? Protons and Neutrons • 4. Which subatomic particles fly around in clouds? Electrons • 5. Which subatomic particle has no electrical charge? Neutrons • 6. Which subatomic particle has a positive charge? Protons • 7. Which subatomic particle has a negative charge? Electrons • 8. Which part of the atom has the most mass: the nucleus or the cloud? Nucleus • 9. Which is the only particle not found in the nucleus? Electrons • 10. Which has more mass: 2 electrons, 1 electron and 1 proton, or 2 protons? 2 protons has the most mass (2 AMU). Note: 2 electrons = 0 AMU and 1 proton and 1 electron has mass of 1 AMU

  11. Guided Practice Answers: • 1. Which part of diagram represents the entire nucleus of the atom? A. B. C. D. E. • 2. Which part of the diagram represents the neutrons in an atom? A. B. C. D. E. • 3. Which part of the diagram represents the particle with the least mass? A. B. C. D. E. • 4. Which part of the diagram represents the protons? A. B. C. D. E. • 5. Which part of the diagram represents a negatively charged particle? E. • Note: D. is labeling 2 different energy levels or layers where electrons can be found.

  12. Independent Practice • Complete the Try it On Your Own Questions on your guided notes • Work on Study Tool to help you memorize vocabulary and subatomic particles in atoms. • HOMEWORK: Complete the Study Tool and the Homework you picked up on your way into class • Exit Ticket with 8 minutes left • Take out red pen when you are done • Put notes and Study Tool in Science Study Buddy Binder

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