1. + 1.Update your completion chart. 2.Shade in your most recent grade on your tracker. 3.Work on the Neuron Activation 1.Draw a Lewis Dot Diagram for an atom that has 8 electrons at its ground state.

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3. + The Breakdown of the Day Explore – Nuclear Particles Understand – How to write nuclear decay reactions Opportunity – Gain an understanding of why things are radioactive ?

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5. + The History of the Atom 1. Radioactivity: When materials _______________ _____________ they become radioactive.

6. + The History of the Atom 2 Two main reasons why particles are radioactive: a. Some particles are naturally radioactive because of their _______________. ____________________ is the last element in the periodic table that has a stable, nonradioactive isotope. b. If the mass of an isotope is greater than the __________________________________.

7. + CompositionMassChargePenetration CompositionMassChargePenetration CompositionMassChargePenetration

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9. + CompositionMassChargePenetration CompositionMassChargePenetration CompositionMassChargePenetration

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11. + CompositionMassChargePenetration CompositionMassChargePenetration CompositionMassChargePenetration

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13. + CompositionMassChargePenetration CompositionMassChargePenetration CompositionMassChargePenetration

14. + Combinations and Decay 3. If you add two particles to form a product, then the particles are _____________. 4. If you take one particle and split it into two, then the particles are _______________.

15. + 1) Write your initial atoms 2) Make sure the atomic numbers and atomic masses on one side of the equation equal the atomic numbers and masses of the other side of the equation. Finish the equation for the following reactions Nitrogen-14 combines with an alpha particle

16. + 1) Write your initial atoms 2) Make sure the atomic numbers and atomic masses on one side of the equation equal the atomic numbers and masses of the other side of the equation. Finish the equation for the following reactions Fluorine-20 went through beta decay.

17. + Guided Practice Hot Seat -3 problems -3 tries -best time wins

18. + Problem 1 Fill in the information for an ALPHA PARTICLE CompositionMassChargePenetration

19. + Problem 1 Fill in the information for an BETA PARTICLE CompositionMassChargePenetration

20. + Problem 1 Fill in the information for an GAMMA PARTICLE CompositionMassChargePenetration

21. + Problem 2 Write the following decaying reaction Nitrogen-15 went through BETA decay.

22. + Problem 2 Write the following decaying reaction Bromine-83 went through ALPHA decay.

23. + Problem 2 Write the following decaying reaction Chlorine-38 went through BETA decay.

24. + Problem 3 Write the following combination reaction Uranium-92 combined with a BETA PARTICLE.

25. + Problem 3 Write the following combination reaction Plutonium-244 combined with an ALPHA PARTICLE.

26. + Problem 3 Write the following combination reaction Polonium-209 combined with an BETA PARTICLE.