1. Unit 3 white board review Work as a team to complete each task on your whiteboard (no more than 5 people per group) You must get your whiteboard checked off by me to get the next task. Each task is worth 5 participation points. You may take pictures of your completed whiteboard after approval.

2. Task 1: Copy and complete the following chart: Atomic mass

3. Task 2: Write the chemical notation for the following atoms: a)A sodium ion with a charge of +1 b)An oxygen ion with a charge of -2 c)A carbon-13 isotope d)A nitrogen-16 isotope

4. Task 3: Create a timeline of atomic history. Include Democritus, JJ Thomson, Ernest Rutherford, Niels Bohr. Don’t forget to include a brief description of their investigation, findings, and model.

5. Task 4: a)Draw a T-chart to compare and contrast between the BOHR model and Quantum model b)Summarize how electrons are organized in the quantum mechanical model c)Write the electron configurations, noble gas shortcuts, and # of valence electrons for the following 3 atoms: -Calcium -Bromine -Lead

6. Task 5: Copy and complete the nuclear equations.

7. Task 6: Write the following equations: a)When bombarded with a neutron, Uranium- 235 undergoes fission to produce Barium- 141, Krypton-92 and 3 neutrons. b)Two hydrogen-2 atoms undergo fusion to produce Helium-4 and energy

8. Task 7: Create a chart to describe characteristics of the following groups/families on the periodic table. -Alkali metals -Alkaline Earth metals -Transition metals -Halogens -Noble Gases

9. Task 8: Describe the following trends on periodic table. Include the WHY. -Atomic Radius -Ionization Energy -Electronegativity