AP Chemistry Name______________________________
Period ____ Date ___/___/___
P R A C T I C E T E S T - A N S W E R S
1. What is the formula of the ionic compound formed between Mg and Br? a) MgBr b) Mg
2
Br c) MgBr
2 d) Mg
2
Br
2 e) Mg
2
Br
3
2. What is the formula of the ionic compound formed between Ca and P? a) Ca
2
P b) CaP
3 d) Ca
2
P e) Ca
3
P
2 c) Ca
5
P
10
3. What is the name of the SO
3
2– ion? a) sulfate b) nitrate c) sulfite d) sulfur trioxide e) hydrogen sulfate
4. What is the correct formula and charge for the chromate ion? a) CrO
4
2– b) CrO
4
– c) Cr
2
O
7
2– d) Cr e) Cr
2
O
3+
7
–
5. Which one of the following elements forms ions with two different valences? a) calcium c) iron b) arsenic d) fluorine
6. The correct name for CCl
4
is a) carbon(I) chloride b) carbon chloride c) carbon tetrachloride d) monocarbon chloride(IV) e) carbochlorinate
7. The correct formula for hydrogen telluride is a) HTe b) H
2
Te c) H
3
Te d) HTe
2
8. The correct formula for dinitrogen tetroxide is a) NO
2 b) N
2
O
4 c) N
2
O
5 d) NO e) (N
2
9. The correct name for S
2
Cl
2
is
3
–
O)
4 a) sulfur dichloride b) sulfur(I) chloride c) sulfur(II) chloride d) disulfur dichloride e) sulfur chloride
10. The correct name for H
3
P is a) hydrogen phosphide b) trihydrogen phosphide c) hydrogen phosphate d) phosphorus trihydride e) hydrogen triphosphate
11. Certain properties are characteristic of metals. Which property means that you can pound the substance into a foil? a) ductility c) sectility b) conductivity d) malleability
12. Which of the following is a metalloid? a) As b) Ag c) S d) Pb

e) He
13. Which of the following is a transition metal? a) Cl b) Ni c) P d) Ca e) C
14. Which of the following is an alkali metal? a) Mg b) Kr c) K d) Al e) H
15. Which of the following is an lanthanide? a) Xe b) Eu c) Cd d) P e) W
16. Which element has the highest melting point? a) Pb b) Au c) Os d) W e) Hg
17. Cathode rays start at the a) negative electrode c) positive electrode b) power source d) gas inside the tube
18. Canal rays are a) neutrons b) protons c) positive ions d) electrons
19. Listed below are the charges and masses of four particles. Which one will be deflected the least in a mass spectrometer? a) +2, 2 amu b) +4, 4 amu c) +1, 1 amu d) +1, 4 amu
LARGE MASS = SMALL DEFLECTION
20. In a Millikan oil drop type experiment, the charge on four oil drops (in Coulombs) was found to be:
3.33
=1 Coulombs
8.88
=2.6
Coulombs
6.66
=2 Coulombs
11.10
=3.33
Coulombs
Divide each by 3.33, smallest common factor
What is the charge on the electron according to this experiment? a) 1.11 Coulomb c) 4.44 Coulomb b) 2.22 Coulomb d) 11.10 Coulomb
21. Pictured below is a schematic of the
Rutherford experiment. Which scattered

particle gives the best evidence for the nuclear atom? a
 b c e d a) a b) b c) c d) d e) e bounced off nucleus
22. Which of the following is an isotope of the element with 20 protons (p=20) and 22 neutrons (n=22)? a) titanium-22 b) zirconium-40 c) calcium-40 d) titanium-48
For questions 23 - 27, use the following key:
(each answer may be used once, more than once,
or not at all) a) alpha b) beta c) gamma d) alpha and beta, but not gamma
23. A high energy form of light C
24. Associated with a neutron changing into a proton B
25. A high speed electron B
26. Used by Ernest Rutherford as a “probe” A
27. Most penetrating of the “Bequerel Rays” C

For questions 28-31, use the following key:
(each answer may be used once, more than once,
or not at all.) a) John Dalton b) Ernest Rutherford c) J.J. Thomson d) Democritus
28. His model of the atom has been called the “billiard ball” model.
A
29. He studied matter in cathode ray tubes. C
30. His philosophical idea included the term “atomos”.
D
31. He added to the atomic theory the idea that atoms had positive and negative parts. C
32. Consider the following notation: 220, 86 Rn
Which statement below is correct? a) This particle contains 86 protons b) This particle has a mass number of 86 c) This particle has an atomic number of 220 d) This particle contains 220 neutrons