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AP Chem Thou Shalt Not Forget Part 4

Total questions: 50

Worksheet time: 22mins

Name
Class
Date
1.
What is the the shape of this molecule according to VSPER theory?
a)
Linear
b)
Tetrahedral
c)
Trigonal Planar
d)
Trigonal pyramidal
2.

What compound could this be?

a)

CO2

b)

NH3

c)

H2O

d)

CH4

3.

Draw the Lewis Dot structure for PCl5 and determine the predicted molecular geometry

a)

octahedral

b)

trigonal pyramidal

c)

seesaw

d)

trigonal bipyramidal

4.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
5.
How many sigma and pi bonds does this have?
a)
1 sigma and 1 pi
b)
2 sigma and 1 pi
c)
1 sigma and 2 pi
d)
2 sigma and 2 pi
6.
How many sigma and pi bonds does this have? 
a)
3 sigma and 2 pi
b)
5 sigma and 5 pi
c)
5 sigma and 0 pi
d)
0 sigma and 5 pi
7.
Carbon atom undergo
a)
sp hybridization
b)
sp2 hybridization
c)
sp3 hybridization
d)
dsp3 hybridization
8.

Filtering separates mixtures based on differences in what property?

a)

Chemical

b)

Solubility

c)

Particle size

d)

Density

9.

What is the equation for calculating the density of a substance?

a)

D=m/v

b)

m=D/v

c)

D=v*m

d)

D=v/m

10.

When an electron is in a lower energy level, it is ________________ away from the nucleus

a)

Closer

b)

Farther

11.

When reading a PES (Photoelectric Spectroscopy) graph, what does the height of a peak represent?

a)

The number of electrons

b)

The number of protons

c)

The mass or the isotope

d)

The amount of energy the electron has

12.

Isotopes of an element have the same number of __________, but different number of __________.

a)

protons, neutrons

b)

neutrons, protons

c)

protons, electrons

d)

electrons, protons

13.

When reading a PES (Photoelectron Spectroscopy) graph, a larger binding energy means that the electrons are _________________ the nucleus?

a)

Closer to

b)

Farther from

14.

Distillation separates mixtures based on differences in what property?

a)

Solubility

b)

Boiling Point

c)

Particle Size

d)

State of Matter

15.

What type of change conserves mass?

a)

none

b)

chemical

c)

physical

d)

chemical and physical

16.

When an electron is in a higher energy level, it has ___________ Coulombic attraction to the nucleus

a)

More

b)

Less

17.

Which orbital comes after 4s?

a)

3d

b)

5s

c)

4p

d)

4d

18.

Are cations larger or smaller than their neutral atoms?

a)

Larger

b)

Smaller

c)

Same size

19.

Moving across a row (L to R) on the periodic table, Zeff _________________

a)

Increases

b)

Decreases

c)

Stays the same

20.

What type of change separates a compound into elements?

a)

physical

b)

chemical

c)

chemical and physical

21.

Why do atoms get smaller moving across a period (L to R) on the periodic table?

a)

More protons (q) to attract the electrons

b)

Fewer protons (q) to attract the electrons

c)

More energy shells (r) so it can't attract the electrons

d)

Fewer energy shells (r) so it attracts the electrons closer

22.

Why are anions larger than their neutral atoms?

a)

More shielding that repels the other electrons

b)

Fewer protons to attract electrons

c)

More electrons to attract protons

d)

More Zeff to attract electrons

23.

When an electron is in a lower energy level, it has a ________________ 1st ionization energy

a)

Higher

b)

Lower

c)

Same

24.

What is the total # of covalent bonds carbon has to make when drawing a Lewis structure?

a)

12

b)

6

c)

4

d)

8

25.

Which electrons are removed first when making a cation?

a)

s

b)

p

c)

d

d)

f

26.

What do mass spectroscopy graphs measure?

a)

Mass of isotopes

b)

Mass of protons

c)

Energy of electrons

d)

Number of electrons

27.

What is the bond angle in BF3?

a)

90

b)

120

c)

109.5

d)

180

28.

When reading a PES graph, a larger binding energy means that the electrons are ____________ from the nucleus?

a)

closer

b)

farther

c)

the same distance

29.

Which orbital comes after 4p?

a)

5s

b)

4s

c)

3d

d)

4p

30.

What is the bond angle in H2O?

a)

120

b)

90

c)

180

d)

109.5

31.

Are asymmetrical molecules polar or nonpolar?

a)

Polar

b)

non-polar

c)

neither

32.

What is the bond angle in NH3

a)

120

b)

109.5

c)

180

d)

90

33.

List the 3 Intermolecular forces from weakest to strongest

a)

hydrogen bonding, london dispersion, dipole dipole

b)

london dispersion, hydrogen bonding, dipole dipole

c)

london dispersion, dipole dipole, hydrogen bonding

d)

dipole dipole, hydrogen bonding, london dispersion

34.

List ALL the Intermolecular forces that exist in PCl3

a)

hydrogen bonding, london dispersion

b)

london dispersion, hydrogen bonding, dipole dipole

c)

london dispersion, dipole dipole

d)

london dispersion

35.

Are anions larger or smaller than their neutral atoms?

a)

Larger

b)

Smaller

c)

Same size

36.

“More polarizable” refers to which Intermolecular Force?

a)

hydrogen bonding

b)

london dispersion

c)

dipole dipole

37.

What is an example of a covalent network solid?

a)

Salt

b)

Diamond

c)

Sugar

d)

Water

38.

Name a property that decreases as Intermolecular Forces increase.

a)

Vapor pressure

b)

Conductivity

c)

Melting point

d)

Solubility

39.

P and V are ___________________ related?

a)

inversely

b)

directly

40.

The more molar mass a gas has, the_________________ it moves

a)

faster

b)

slower

41.

Average Kinetic Energy is another term for _____________.

a)

Heat

b)

Temperature

c)

Pressure

d)

Activation energy

42.

Real gases behave most like an ideal gas at what conditions of temperature and pressure?

a)

High T, Low P

b)

High P, Low T

c)

High V, Low T

43.

When an electron is in a lower energy level, it has a ___________ 1st ionization energy

a)

Higher

b)

Lower

44.

What is the hybrid orbital used in CH4?

a)

sp3

b)

sp

c)

sp2

45.

What is the hybrid orbital used in CO2

a)

sp3

b)

sp

c)

sp2

46.

Count the number of sigma and pi bonds in this molecule:

a)

13 sigma, 1 pi

b)

14 sigma, 2 pi

c)

1 sigma, 14 pi

d)

2 sigma, 13 pi

47.

Why are asymmetrical molecules polar?

a)

Their dipoles do not cancel

b)

Their dipoles cancel

48.

What is the bond angle in SO2

a)

120

b)

90

c)

180

d)

109.5

49.

Name a property that increases as Intermolecular Forces increase.

a)

Vapor pressure

b)

Conductivity

c)

Melting point

d)

Solubility

50.

When a molecular solid melts or boils, which bonds break?

a)

Intermolecular

b)

Intramolecular

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