Download AP chemistry Test Review

AP chemistry Test Review
Short Answer:
1. Report the number of significant figures in each of the following values:
2. 0.00237g ______________
3. 0.002037g _______________
4. 350. _______________
5. 64Ml_________________
Question 1-4
Refer to the following elements:
a)
b)
c)
d)
e)
Fluorine
Chlorine
Bromine
Iodine
Astatine
1. The element that is most active chemically
2. The element with the smallest ionic radius
3. The element with the lowest ionization energy
4. The element that first shows some visible metallic properties at room temperature.
Question 5-7
a)
b)
c)
d)
e)
1s
2s
3s
3p
3d
5. Contains up to 10 electrons
6. Contains one pair of electrons in the ground state electron configuration of the
lithium atom
7. Is exactly one half filled in the ground state electron configuration of the
phosphorus atom
8. The most active metallic elements are found in :
a) The upper right corner of the periodic table
b) The lower right corner of the periodic table
c) The upper left corner of the periodic table
d) The lower left corner of the periodic chart
e) The middle of the periodic chart, just beyond the transition elements
9-11 Select the scientist primarily responsible for the findings in each
question
a) Dalton
b) Einstein
c) Heisenberg
d) Thomas
e) Rutherford
9. Made important discoveries about the properties of cathode rays
10. Proposed the existence of a nucleus
11. Determined that it was impossible to know simultaneously information about the
location and movement of electrons
12. Which set of quantum numbers (n,l,ml, ms) is not possible?
a) 1,0,0,1/2
b) 1,1,0,1/2
c) 1,0,0,-1/2
d) 2,1,-1,1/2
e) 3,2,1,1/2
13. Free Response:
Cholorophyl a, a photosynthetic pigment found in plants, absorbs light with a
wavelength of 660 nanometers.
a) Determine the frequency in S of chlorophyll a
b) Calculate the energy of a photon of light with a wavelength of 660nm
14. The energy required to remove an electron from a gaseous atom is known as:
a) Activation energy
b) Ionization energy
c) Kinetic energy
15. Which of the following has the most polar bond?
a) N2
b) F2
c) HF
d) HCL
e) PCL3
16. Which molecule has a Lewis structure that does NOT obey the octet rule?
a)
b)
c)
d)
e)
NO
CS2
PF3
HCN
CCL4
17. Determine the molecular geometries of the following molecules:
a) H2Se
b) BrF3
c) SCl4
18. The electron dot structure for which of the following molecules would have one
unshared pairs of electrons on the central atom?
a)
b)
c)
d)
e)
H2O
NH3
CH4
C2H2
CO2
19. Which of the following molecules has a trigonal pyramidal shape
a)
b)
c)
d)
e)
PCL5
N2O
NH3
CCL4
H2O2
20. Which of the following regarding the Rutherford experiment is not correct:
a) Most alpha particles passed through the gold foil without being deflected since
the nuclei of the gold atoms represent such a small portion of the total atomic
volume.
b) Coulombs law which states that like charges repel each other, accounts for the
deflection of alpha particles passing close to gold atom nuclei.
c) Most alpha particles passed through the gold foil without being deflected since
the nuclei of the gold atoms represent such a small portion of the atomic mass.
d) Because of the electrons small masses they did not deflect the alpha particles.
e) The high charge of the gold nuclei helps to account for their ability to deflect
smaller helium nuclei passing close by.
21. With respect to electronic configuration which of the following is not correct.
a) Se and O have an identical number of valence electrons.
b) B and Cl both have the same number of unpaired electrons in their ground state
electron configuration.
c) O and F have an identical electron configuration.
d) Ne and Ar both have a filled p-orbital in the valence shell.
e) Se and Br are expected to have similar chemical properties since they are in the
same row of the periodic table.