- 1. The last orbital in this Bohr electron diagram would ALSO be useful in making
A) Lewis Dot Diagrams
B) 3D Bonding Diagrams
C) Reaction Models
- 2. Water in this Dot Diagram shows the
A) 3D model
B) stable compound with shared electrons
C) empty electron orbits
D) polarity
- 3. Lewis Dot Diagrams display the chemical symbol and
A) valence electrons which react
B) atomic mass
C) neutrons which repel protons
D) protons which repel electrons
- 4. This empty orbitals Bohr model would NOT help finding the valence for element # ______
A) 70
B) 92
C) 114
- 5. Rainbows cast a spectrum which comes from the excited electrons which _______ described.
A) Democritus
B) Dalton
C) Bohr
- 6. In Einstein's day, photons behaved like waves AND particles under different observations. {Geek Fightin' Words} The physicists finally agreed upon Quantum Theory which was developed because atomic particles were _______________________.
A) NOT following Newtonian Laws
B) absolutely unpredictable
C) too small, but predictable
- 7. THE Gold Foil experiment ("Cannonball Ricochet off tissue paper") was done by all these scientists EXCEPT _______
A) Rutherford
B) Einstein
C) Geiger
D) Marsden
- 8. This guy was POSITIVE that electrons were negatively charged, because he used an electron gun (Cathode Ray Tube) where electrons were redirected by charged plates.
A) Thompson
B) Bohr
C) Democritus
- 9. Going ACROSS the Periodic Table, each row is referred to as
A) an element
B) a group
C) a period
D) a family
- 10. The columns going down share the number of __________ ___________ and ___________ __________.
A) electrons //protons
B) valence electrons/ / chemical properties
C) negative neutrons // neutral protons
- 11. Change the __________ change the element!
A) proton
B) neutron
C) electron
- 12. Change the __________ create an ION
A) proton
B) electron
C) neutron
- 13. Change the __________ create an ISOTOPE
A) neutron
B) proton
C) electron
- 14. As the nucleus of an unstable isotope loses particles, the percent of that isotope decreases over time. That time is called
A) atomic time
B) half life
C) era
- 15. Carbon 14 is used in dating organic material. The gradual ______ of Carbon 14 transforms that isotope into Carbon 13, in 5730 years.
A) exploding
B) decaying
C) absorbing
D) building
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