Unit 2 Exam Study Guide
Part 1: Name that Scientist
For the scientists listed below, explain their greatest discovery and any major items they used
to make this discovery.
1. JJ Thompson:
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2. Ernest Rutherford:
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3. John Dalton:
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4. Neils Bohr:
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Part 2: Additional Vocab
5. Draw an atom, label all parts and list charges
6. How do you find the number of protons in an atom? _______________________________
7. Number of electrons? ______________________________________
8. Neutrons? _________________________________________
9. What are the four principles in John Daltons atomic theory?
1.
2.
3.
4.
Part 3: Electron Configurations
For the following elements – write out their electron configurations. Please include BOTH the
diagram with the arrows as well as the statement without the arrows.
10. Iron – Fe
11. Potassium – K
Part 4: Two – Step Conversions
Using the charts below complete the following conversions
Metric Conversions:
1000 milligrams = 1 gram
100 centigrams = 1 gram
10 decigrams = 1 gram
1000 grams = 1 kilogram
12. How many meters are in 17 inches?
13. How many gallons are in 1350 milliliters?
14. How many ounces are in 450 decigrams?
Part 5: Bohr Diagrams
Draw Bohr Diagrams for the following elements. Be sure to label the number of protons and
neutrons in the center of your atom.
15. Phosphorus
16. Arsenic
17. Copper
Part 6: Lewis Dot Structures
Draw Lewis Dot Structures for the following. Be sure to put your answers in the SIMPLEST form.
18. PBr3
19. NO2 ^-1
Part 7: Bonus
How many valence electrons are in the following:
20. Carbon
21. Fluorine
22. Strontium