unit 5 Review - Wiggins School District

What is its implication/contribution in quantum theory? ... Define the Pauli Exclusion Principle. ... unit 5 Review Author: simbeckb...

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Chemistry Unit 5 (Ch 8 &11) Review Vocab: Wavelength Frequency Atom Aufbau Principal Hund’s Rule Isotopes Valence Electrons Pauli’s Exclusion Principal Avogadro’s Number

Orbitals Bohr’s Model Wave Mechanical Model Quantum Photon Atomic radius Ionization Energy Electronegativity

1. Calculate the Molar Mass of an Element a. H2SO4 b. Cu(NO3)2

2. Calculate Moles to grams (& vice versa) conversions a. Calculate the mass in grams of 0.251 mol of ethyl alcohol (C2H6O).

b. Calculate the number of moles in a 521g sample of Fe.

3. Calculate moles to particles (& vice versa) conversions a. Calculate the number of molecules present in a 2.62 x 10 ^ -6 mol of water.

4. Calculate grams to particles (& vice versa) conversions a. Calculate the number of molecules percent in 5.23 g of benzene (C6H6)

5. Calculate the percent composition of a Compound a. Calculate the percent by mass of each element in the compound Fe2O3

6. Calculate the empirical formula of a compound

a. A 0.5998g sample of a new compound has been analyzed and found to contain the following mass of elements: C 0.2322g; H 0.05848 g; oxygen 0.3091g. Calculate the empirical formula.

7. Calculate the molecular formula of a compound a. A compound used as an additive for gasoline to help prevent engine knock shows the following percent composition: 71.65% Cl; 24.27%C; 4.07H. The molar mass is known to be 98.96g. Determine the empirical formula and the molecular formula for this compound.

8. Define photon. What is its implication/contribution in quantum theory?

9. Compare and Contrast Bohr’s Model of the Atom and the Wave Mechanical Model of the Atom.

10. List the 4 quantum numbers and what they tell us about an electron.

11. Define the Pauli Exclusion Principle. What are its implications in electron configurations.

12. Define Aufbau Principle. What are its implications in electron configurations.

13. Define Hund’s Rule. What are its implications in electron configurations.

14. Write the electron configuration notation of a. Silicon (Si) b. Lead (Pb)

15. Write the noble gas notation of a. Rb (rubidium) b. P (Phosphorous)

16. Write the orbital notation for Carbon.

17. Define Atomic Radius and explain the trend for it across a period and down a group.

18. Define Ionization Energy and explain the trend for it across a period and down a group.

19. Define Electronegativity and explain the trend for it across a period and down a group.

20. You will need to know the Chemical Name and Chemical Symbol of each of the Elements we made flash cards for.