Download Chapter 3 Questions 1. Why did people believe Aristotle`s view of

Chapter 3 Questions
1. Why did people believe Aristotle’s view of matter more than Democratis’ even though Democratis
was closer to the truth?
2. What are the three fundamental laws of the atomic theory?
3. Explain the law of definite proportions.
4. What are the 5 postulates of Dalton’s atomic theory and which have been proven wrong?
5. Describe the three different experiments J.J. Thompson conducted with the cathode ray tube that
helped discover the electron.
6. Describe the Plum pudding model.
7. Describe Rutherford’s gold foil experiment and what results came from it.
8. Describe Rutherfords nuclear model of the atom and what problems were addressed from the plum
pudding model.
9. Compare and contrast protons and neutrons.
10. What does the atomic number tell us about an atom?
11. What does the mass number tell us about an atom?
12. Describe the process of an atom emitting a line emission spectrum.
13. What do each of the 4 quantum numbers tell a person about an electron?
14. Complete the orbital notation for Potassium, Copper, and Tin.
15. Complete the standard electron configuration for Magnesium, Silver, and Uranium.
16. Complete the noble gas notation for Francium, Tungsten, and Plutonium.
17. Convert each of the following to moles.
12.3 g H2O, 89.45 g Br, 2.3 x 1024 atoms Kr, 9.32 x 1023 molecules CO2
18. Convert each of the following to grams.
3.4 mols Ar, 0.194 mols C6H12O6, 9.23 x 1023 atoms Fe, 2.1 x 1021 molecules H2O
19. Convert each of the following to molecules or atoms.
5.4 moles O2, 0.0032 moles Pb, 12.3 g C12H22O11 , 0.000234 g Ra
Definitions
Law of Definite Proportions,
Isotope Name
Symbol Protons Neutrons Electrons
Law of Multiple Proportions,
Law of Conservation of Mass,
Indium-114
Pauli Exclusion Priciple,
18
24
Electron, Nucleus, Proton,
87
Rb
Neutron, Atomic Number,
Mass Number, Isotope,
Orbital, Electromagnetic
Spectrum, Ground State,
Excited State, Quantum
Number, Aufbau Principle,
Tungsten-184(+6)
Hund’s Rule, Atomic Mass,
Mole, Molar Mass, Avagadro’s Number
-105
46
9
23
Na+
11
10