1. Chemistry Do Now
Directions: Take out a sheet of notebook (Do Now sheet). Answer each question. 1) What is alpha decay? 2) What is the alpha particle? 3) What is beta decay? 4) What is the beta particle? 5) What is gamma decay? 6) Put U through alpha, beta and gamma decays.

2. Chemistry Do Now KEY
1) What is alpha decay? Alpha decay is the breakdown of an atomic nucleus where an alpha particle (helium nucleus) and energy are released to become stable.
2) What is an alpha particle? Helium nucleus (42He)
3) What is beta decay? Beta decay is the breakdown of an atomic nucleus where a beta particle (fast moving electron) and energy are released to become stable.
4) What is a beta particle? Fast moving electron
5) What is gamma decay? Gamma decay is the breakdown of an atomic nucleus where gamma energy is released to become stable.
Put U through alpha, beta and gamma decays.
ALPHA DECAY: U  42 He Th
BETA DECAY: U  0-1 e Np
GAMMA DECAY: U  00 γ U

3. Objective(s)
Students will know how does radiation impact everyday life by taking notes, reading articles and completing a worksheet
Mastery Level: 75% or better on the article questions and worksheet

4. Reminders
Third quarter ends on April 3, 2019 (12 school days) so the window for posting 3rd quarter grades will be opening within the next 2 weeks.

5. Engage
Students watch the video: The Most Radioactive Places on Earth (by Veritasium runtime = 11:17). As they watch the video, students will answer questions.
Source:

6. Radioactive Decay - RECAP
Radioactive decay results in the emission of either:
an alpha particle (a), 42He nucleus + energy
a beta particle (b), 0-1 e (electron) + energy
or a gamma ray(g), no particle, just energy

7. An Overview of Nuclear Decay
Helium nucleus or α particle
Electron or β particle
Gamma radiation

8. Extend/Evaluation
PART 1: Students develop their own visual model of each type of radioactive decay (alpha, beta, gamma), focusing on the particles involved and the penetration ability for each.
PART 2: Students will work in groups to read about the scientific contributions of Marie Curie and will create a chart with the 10 MOST IMPORTANT FACTS about her life and her research on the positive and negative experiences of radiation.