1. Welcome to AP Chemistry Review
Day 3: Chapters 5-8

2. What should I be doing to study?
Worksheets given in class are expected to be completed at home that night.
All worksheets will be graded during the 150 pt notebook check.
Lunch Study Sessions This Thursday & Friday
FRQ practice
(food will be provided Friday, please let me know if you can’t make it)

3. –483.6 kJ/mole. +483.6 kJ/mole. –241.8 kJ/mole. +241.8 kJ/mole.
2 H2 + O2  2 H2O If the reaction above releases kJ, then the standard enthalpy of formation of H2O =
–483.6 kJ/mole.
kJ/mole.
–241.8 kJ/mole.
kJ/mole.
Answer: c

4. –483.6 kJ/mole. +483.6 kJ/mole. –241.8 kJ/mole. +241.8 kJ/mole.
2 H2 + O2  2 H2O If the reaction above releases kJ, then the standard enthalpy of formation of H2O =
–483.6 kJ/mole.
kJ/mole.
–241.8 kJ/mole.
kJ/mole.
Answer: c

5. When a piece of iron at 356 K is placed in water at 298 K, what happens?
Energy flows from iron to water.
Energy flows from water to iron.
Energy does not flow.
Energy is not conserved.
Answer: a

6. When a piece of iron at 356 K is placed in water at 298 K, what happens?
Energy flows from iron to water.
Energy flows from water to iron.
Energy does not flow.
Energy is not conserved.
Answer: a

7. The laboratory technique used to measure heat flow is called
calorimetry.
neutralization.
titration.
voltammetry.
Answer: a

8. The laboratory technique used to measure heat flow is called
calorimetry.
neutralization.
titration.
voltammetry.
Answer: a

9. energy × distance energy ÷ distance force × distance force ÷ distance
Work = __________
energy × distance
energy ÷ distance
force × distance
force ÷ distance
Answer: c

10. energy × distance energy ÷ distance force × distance force ÷ distance
Work = __________
energy × distance
energy ÷ distance
force × distance
force ÷ distance
Answer: c

11. bottom ground fundamental original
The lowest energy state of a hydrogen atom is called its _______ state.
bottom
ground
fundamental
original
Answer: b

12. bottom ground fundamental original
The lowest energy state of a hydrogen atom is called its _______ state.
bottom
ground
fundamental
original
Answer: b

13. The line spectrum of hydrogen includes lines at 447, 502, 587, and 668 nm. The line at ___ nm represents the most energetic transition.
Answer: a
a b. 502
c d. 668

14. The line spectrum of hydrogen includes lines at 447, 502, 587, and 668 nm. The line at ___ nm represents the most energetic transition.
Answer: a
a b. 502
c d. 668

15. microwave, IR, visible, UV IR, microwave, UV, visible
Which sequence lists types of electromagnetic energy in order of increasing energy?
microwave, IR, visible, UV
IR, microwave, UV, visible
UV, visible, IR, microwave
visible, UV, microwave, IR
Answer: a

16. microwave, IR, visible, UV IR, microwave, UV, visible
Which sequence lists types of electromagnetic energy in order of increasing energy?
microwave, IR, visible, UV
IR, microwave, UV, visible
UV, visible, IR, microwave
visible, UV, microwave, IR
Answer: a

17. The only allowed values for the spin magnetic quantum number are
0 and 1.
0 and +1/2.
+1/2 and 1.
+1/2 and –1/2.
Answer: d

18. The only allowed values for the spin magnetic quantum number are
0 and 1.
0 and +1/2.
+1/2 and 1.
+1/2 and –1/2.
Answer: d

19. s orbitals are shaped like
four-leaf clovers.
dumbbells.
spheres.
triangles.
Answer: c

20. s orbitals are shaped like
four-leaf clovers.
dumbbells.
spheres.
triangles.
Answer: c

21. p orbitals are shaped like
four-leaf clovers.
dumbbells.
spheres.
triangles.
Answer: b

22. p orbitals are shaped like
four-leaf clovers.
dumbbells.
spheres.
triangles.
Answer: b

23. The electron configuration of a carbon atom is
[He]2s22p6.
[He]2s22p4.
[He]2s22p2.
[He]2s2.
Answer: c

24. The electron configuration of a carbon atom is
[He]2s22p6.
[He]2s22p4.
[He]2s22p2.
[He]2s2.
Answer: c

25. The electron configuration of a germanium atom is
[Ar]4s24p2.
[Ar]4s23d104p2.
[Kr]4s23d104p2.
d. [Kr]4s23d104p2.
Answer: b

26. The electron configuration of a germanium atom is
[Ar]4s24p2.
[Ar]4s23d104p2.
[Kr]4s23d104p2.
d. [Kr]4s23d104p2.
Answer: b

27. The first Periodic Table was created by
Amadeo Avogadro.
Dmitri Mendeleev.
Henry Moseley.
Ernest Rutherford.
Answer: b

28. The first Periodic Table was created by
Amadeo Avogadro.
Dmitri Mendeleev.
Henry Moseley.
Ernest Rutherford.
Answer: b

29. The atom with the smallest atomic radius is
Ca.
Cr.
Co.
Br.
Answer: d

30. The atom with the smallest atomic radius is
Ca.
Cr.
Co.
Br.
Answer: d

31. anionic cationic effective van der Waals
The shortest distance between the nuclei of two identical atoms when they collide is called the ___ radius.
anionic
cationic
effective
van der Waals
Answer: d

32. anionic cationic effective van der Waals
The shortest distance between the nuclei of two identical atoms when they collide is called the ___ radius.
anionic
cationic
effective
van der Waals
Answer: d

33. The statements below refer to ionic radii. Which statement is FALSE?
Br1– is larger than Cl1–.
Se2– is larger than Br1–.
K1+ is larger than Ca2+.
Na1+ is larger than K1+.
Answer: d

34. The statements below refer to ionic radii. Which statement is FALSE?
Br1– is larger than Cl1–.
Se2– is larger than Br1–.
K1+ is larger than Ca2+.
Na1+ is larger than K1+.
Answer: d

35. Two ions are isoelectronic if they have the same
charge.
number of protons.
number of electrons.
number of neutrons.
Answer: c

36. Two ions are isoelectronic if they have the same
charge.
number of protons.
number of electrons.
number of neutrons.
Answer: c

37. When a main-group metal ion loses an electron to form a cation, the ionic radius is ___ the atomic radius.
greater than
less than
the same as
impossible to predict in relation to
Answer: b

38. When a main-group metal ion loses an electron to form a cation, the ionic radius is ___ the atomic radius.
greater than
less than
the same as
impossible to predict in relation to
Answer: b

39. The minimum energy needed to remove an electron from an atom in its ground state is called the atom’s
potential energy.
activation energy.
electron affinity.
ionization energy.
Answer: d

40. The minimum energy needed to remove an electron from an atom in its ground state is called the atom’s
potential energy.
activation energy.
electron affinity.
ionization energy.
Answer: d

41. The atom with successive ionization energies of 578, 1817, 2745, and 11,577 kJ/mol is
Al.
Na.
Mg. P.
Answer: a

42. The atom with successive ionization energies of 578, 1817, 2745, and 11,577 kJ/mol is
Al.
Na.
Mg. P.
Answer: a

43. The Lewis symbol for a sulfur atom includes how many dots?
five
six
seven
eight
Answer: b

44. The Lewis symbol for a sulfur atom includes how many dots?
five
six
seven
eight
Answer: b

45. The octet rule states that atoms tend to gain, lose, or share electrons until they have _______ valence electrons.
five
six
seven
eight
Answer: d

46. The octet rule states that atoms tend to gain, lose, or share electrons until they have _______ valence electrons.
five
six
seven
eight
Answer: d

47. The carbon disulfide (CS2) molecule has
two single bonds.
two double bonds.
a single bond and a double bond.
a single bond and a triple bond.
Answer: b

48. The carbon disulfide (CS2) molecule has
two single bonds.
two double bonds.
a single bond and a double bond.
a single bond and a triple bond.
Answer: b

49. The formal charge on the nitrogen atom in the nitrate ion (NO31–) is
+2.
+1. 0.
–1.
Answer: b

50. The formal charge on the nitrogen atom in the nitrate ion (NO31–) is
+2.
+1. 0.
–1.
Answer: b Formal charge= v.e. – non bonding e – bonding e/2

51. Which molecule below has an unpaired electron?
NO2
NH3
BF3
PF5
Answer: a

52. Which molecule below has an unpaired electron?
NO2
NH3
BF3
PF5
Answer: a