1. SPARK In your notebook write down the following:
What is in the nucleus of an atom?
How is the mass number of an atom calculated?
What is an isotope?
AGENDA
1) SPARK
2) SHARE OUT
3) LESSON
4) CLASS WORK
5) WRAP UP

2. WOMEN IN SCIENCE Marie Curie was the first woman to win a Nobel
Prize and the first person to win two (the first, shared with her husband Pierre and Becquerel for discovering radioactivity; the second for discovering the radioactive elements radium and polonium).
AGENDA
1) SPARK
2) SHARE OUT
3) LESSON
4) CLASS WORK
5) WRAP UP

3. NUCLEAR CHEMISTRY
Nuclear Chemistry involves a changing of an atoms nucleus. These nuclear reactions are caused by the emissions of particles in the nucleus in the form of both
Neutrons and Protons
. This emission of both rays and particles is what we refer to as Radiation
. When elements give off radiation they can alter their identities and actually can change in to other elements.
AGENDA
1) SPARK
2) SHARE OUT
3) LESSON
4) CLASS WORK
5) WRAP UP

4. NUCLEAR CHEMISTRY
So the idea is that we are changing from one ISOTOPE to a completely different ISOTOPE since isotopes differ by what is in the nucleus!
AGENDA
1) SPARK
2) SHARE OUT
3) LESSON
4) CLASS WORK
5) WRAP UP

5. WHY IS THIS NECESSARY?
Elements are considered radioactive when their nuclei (nucleus) is unstable . The stability of nuclei is based on their ratio of protons to neutrons . These unstable nuclei lose protons and neutrons in order to form a ratio that is more stable. Unstable nuclei lose energy by emitting radiation in a process called nuclear decay
. Radioactive decay allows unstable atoms to lose energy by releasing one of several different types of radiation. The three most common forms of radiation are alpha (), beta () and gamma ().
AGENDA
1) SPARK
2) SHARE OUT
3) LESSON
4) CLASS WORK
5) WRAP UP

6. High-energy electromagnetic radiation
Properties of Radiation
Property
Alpha
Beta
Gamma
High-energy electromagnetic radiation
Composition
Alpha Particles
Beta Particles
Description of
radiation
Electrons - 0
Helium nuclei
Photons 0
4He 2 1
Charge 2+ 1-   
Mass
6.64x10-24 kg
9.11x10-28 kg
Relative Penetrating Power
Not completely blocked by lead or concrete
Blocked by paper
Blocked by metal foil

7. BETA PARTICLES AGENDA 1) SPARK 2) SHARE OUT 3) LESSON 4) CLASS WORK
5) WRAP UP

8. GROUP PRACTICE AGENDA 1) SPARK 2) SHARE OUT 3) LESSON 4) CLASS WORK
5) WRAP UP