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Week 13 Chemistry

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  1. Week 13 Chemistry Nuclear Chemistry

  2. Write the Learning Target Warm Up: 4 Minutes Stay in your own seat You should be working SILENTLY In the atom, , how many protons and neutrons are in the nucleus?

  3. Agenda • Warm Up – 7 minutes • Test Recap– 1 minutes • Cornell Style Notes/ Examples – 15 minutes • Guided Practice – 12 minutes • Independent Practice -15 minutes • Closing – 3 minutes

  4. Test Scores Period 1: 54% Period 3: 58% Period 4: 69% Period 5: 69% Period 6: 54% Period 7: 60%

  5. This Week Monday Thursday Tuesday Types of Nuclear Radiation Fission and Fusion Nuclear Equations

  6. Nuclear Chemistry

  7. Nuclear Chemistry • Changes in matter originating in the nucleus of an atom. Applications: Energy  Nuclear Energy Life  The Sun is an example of nuclear chemistry at work Medicine  X-rays, MRI

  8. Jobs in Nuclear Chemistry • Energy research, production (Nuclear Engineer) • Cancer Treatment (Oncologist) • Medical Imaging (Radiologist) • Radioactive Tracing (Medicine) • Radioactive Dating (Geology)

  9. Let’s Review the Parts of a Chemical Symbol Mass number X Atomic number

  10. Alpha Radiation An alpha particle is identical to that of a helium nucleus. It contains two protons and two neutrons.

  11. 226 222 Ra Rn 88 86 4 α 2 Alpha Radiation

  12. Beta Radiation A beta particle is a fast moving electron which is emitted from the nucleus of an atom undergoing radioactive decay. Beta decay occurs when a neutron changes into a proton and an electron.

  13. At 218 218 Po 84 85 0 b -1 Beta Radiation

  14. Let’s look at Penetration Power

  15. Check point • Which type of nuclear radiation has a negative charge? Beta

  16. Check point • Which type of nuclear radiation produces the most massive particle? Alpha

  17. Check point • Which type of nuclear radiation has the highest penetrating power? Gamma

  18. Guided Practice • Mr. Ghosh: Project a multiple question Student will: • SILENTLYread the question to your self and pick an answer [19 seconds] • Take 42 seconds to speak with your shoulder partner to chose the correct answer and discuss why it is the correct answer. [42 seconds] • When Mr. Ghosh says “SWAG” all students should be SILENT

  19. #1 Which of the following statements accurately describes beta particles in terms of charge and mass? • Beta particles are positively charged and less massive than alpha particles. • Beta particles are negatively charged and less massive than alpha particles. • Beta particles are positively charged and more massive than alpha particles. • Beta particles are negatively charged and more massive than alpha particles.

  20. #2 Which of the following statements describes an alpha particle? • An alpha particle has no mass. • An alpha particle has a negative charge. • An alpha particle has low penetrating power • An alpha particle has a symbol of

  21. #3 The three main types of nuclear radiation are alpha, beta, and gamma. Which of the following lists these types of radiation from lowest penetrating power to highest penetrating power? • Alpha, beta, gamma • Beta, gamma, alpha • Beta, alpha, gamma • Gamma, alpha, beta

  22. #4 Which of the following best describes alpha particles, beta particles, and gamma rays? • Beta particles are negatively charged and are easy to stop • Alpha particles have no charge and are easy to stop • Gamma rays are positively charged and are hard to stop • Alpha particles are positively charged and are easy to stop

  23. Independent Practice  Practice Makes Perfect  85%

  24. Closing What are the three types of nuclear radiation? Which one is the most powerful?

  25. Write the Learning Target Warm Up: 4 Minutes Stay in your own seat You should be working SILENTLY

  26. Warm Up: 4 Minutes

  27. Warm Up: 4 Minutes

  28. Warm Up: 4 Minutes

  29. Agenda • Warm Up: 7 Minutes • Cornell Style Notes and Examples: 15 Minutes • Guided Practice: 13 Minutes • Independent Practice: 15 Minutes • Closing: 3 Minutes

  30. Announcement We have had complaints from the Janitors about the trash being left in the desks. Before you leave each day, I will check EVERY SINGLE DESK for trash. NOBODY WILL LEAVE UNTIL ALL TRASH IS CLEANED UP

  31. This Week Monday Thursday Tuesday Types of Nuclear Radiation Fission and Fusion Nuclear Equations

  32. Take out paper for notes BLUE RED

  33. Nuclear reactions • A change in the identity or characteristics of an atomic nucleus • Results due to an energetic particle, as in fission, fusion, or radioactive decay.

  34. Let’s Review the Parts of a Chemical Symbol Mass number X Atomic number