1. General Chemistry Chem 110
Revision
Chapter 1& 2

2. * candela Which of the following is not an SI base unit? A)1
Which of the following is not an SI base unit? A)
* kilometer B)
kilogram C)
second D)
kelvin 2.
Which of the following SI base units is not commonly used in chemistry? A)
kilogram B)
kelvin C)
* candela D)
mole 3
Which of the following prefixes means 1/1000? A)
kilo B)
deci C)
centi D)
* milli

3. What temperature is 95 °F when converted to degrees Celsius?4.
What temperature is 95 °F when converted to degrees Celsius? A)
63 °C B)
35 °C * C)
127 °C D)
15 °C 5.
What temperature is 37 °C when converted to kelvin? A)
310 K* B)
99 K C)
236 K D)
67 K
. 6
What temperature is 77 K when converted to degrees Celsius? A)
–296 °C B)
105 °C C)
–196 °C * D)
25 °C

4. 7.
What is 22.6 m when converted to decimeters? A)
0.226 dm B)
2.26 dm C)
* 226 dm D)
2.26 x 10–3 dm 8.
What is 25.4 mg when converted to kilograms? A)
2540 kg B)
2.54 x10–5 kg * C)
2.54 kg D)
2.54 x 104 kg
ماهي القراءة الرقمية لدرجة الحرارة على الترمومتر المئوي التي تتساوى مع درجة الحرارة على الترمومتر الفهرينهايتي 9.
At what temperature does the numerical reading on a Celsius thermometer equal that on a Fahrenheit thermometer? A)
0 °C B)
–40 °C * C)
100 °C D)
–32 °C

5. A. 10-9 and 10-6. B. 106 and 10-3. C. 103 and 10-3. D. 109 and 10-6. *
The SI prefixes giga and micro represent, respectively: 
A and 10-6.
B and 10-3.
C and 10-3.
D and *
E and 10-3
11. Lithium is the least dens metal known (density= 0.53 g/cm3 ). What is the volume occupied by 1.2x103 g of lithium? 
A cm3
B cm3
C x10-3 cm3
D x103 cm3 *

6. 12. Convert -77F to kalvin ? A. 212.6 K * B. -212.6 K C. -28.1 K
D K
13. Express 7.5 ng as Tg A.
7.5 X10-21Tg * B.
75 X1024 Tg C.
0.75 Tg D.
7.5 X1021 Tg
14. The SI prefixes giga and micro represent, respectively: 
A and 10-6.
B and 10-3.
C and 10-3.
D and 10-6.*
E and 10-3.

7. 15. Ammonia boils at -33.4C. What temperature is this in F?
A F
B F
C F *
D F
16. Which of the following prefixes is not correct?
A. Kilo- k *
B. micro-µ
C. nano- n
D. deci- d
17. Candela (cd) is the SI base unit of
A. time
B.length
C. luminous intensity *
D.electrical current

8. 18. Express 5500 nm as picometers. A.5.5  10-6 pm B.55.0 pm C.550 pm
D.5.5  106 pm *
19. The SI prefix giga represents: 
A.10-6
B.106
C.103
D.109 * 20
Which of the following prefixes means 106 ? A.
Mega * B.
nano C.
Tera D.
milli

9. Which of the following prefixes means 1/100? A. kilo B. deci C.
21. A piece of iron (Fe) metal weighing g is placed in a graduated cylinder containing
242.0 mL of water. The volume of water now reads mL. From these data calculate
the density of iron.
A g/cm3 *
B g/cm3
C g/cm3
D g/cm3
22.
Which of the following SI base units is used to measure Electrical Current? A.
candela B.
kelvin C.
* Ampere D.
mole 23
Which of the following prefixes means 1/100? A.
kilo B.
deci C.
Centi * D.
milli

10. 24
Which of the following SI base units is not commonly used in chemistry? A.
kilogram B.
kelvin C.
* ampere D.
mole
25. The diameter of an atom is approximately 1  10-7 mm. What is this diameter when expressed in nanometers? 
A  nm
B  nm
C  10-9 nm
D  10-1 nm*
26.
Express 75 Tg as pg A.
7.5 pg B.
75 X1024 pg * C.
0.75 pg D.
75 X pg

11. 27. The SI unit of time is the A. hour B. Second * C. minute D. ampere 28
The following procedure was used to determine the volume of a flask.
The flask was weighted dry and then filled with water. If the masses of empty flask and filled flask were 56.12g and 87.39g,respectively, and the density of water is g/cm3, Calculate the volume of the flask in cm3 ? A.
cm3 B.
87.6 cm3 C.
cm3 * D.
29. Express 2200 nm as picometers.
A X pm
B pm
C pm
D. 2.2X106 pm *

12. 31.The SI prefixes Tara and nano represent, respectively:
The SI prefixes kilo and milli represent, respectively: 
A and 10-6
B and 10-3
C and 10-3 *
D and 10-6
E and 10-3
31.The SI prefixes Tara and nano represent, respectively: 
A and 10-6
B. 106 and 10-3
C. 103 and 10-3
D and 10-9 *
32. The density of octane is g/cm3. what is the mass of 65 mL of octane? 
A g *
B g
C g
D. 110 g

13. 33. How many cubic centimeters are there in exactly one cubic meter? 
A. 1  10-6 cm3
B. 1  10-3 cm3
C. 1  10-2 cm3
D. 1  106 cm3 *
km is how many micrometers? 
A. 6.0  106 µm
B. 1.7  10-7 µm
C. 6.0  109 µm *
D. 1.7  10-4 µm
35. Ammonia boils at -33.4C. What temperature is this in F? 
A F
B F
C F *
D F
36. At what temperature does the numerical reading on a Fahrenheit thermometer equal that on a Celsius thermometer? A.
0 °F B.
–40 °F * C.
100 °F D.
–32 °F

14. 37. How many cm2 are there in exactly m2 ? A. 1  10-6 cm3
B. 1  10-3 cm3
C. 1  10-2 cm3
D. 1  104 cm2 *
38. Which of these quantities represents the largest mass? 
A. 2.0  102 mg
B kg
C. 1.0  105 g
D. 2.0  102 cg *
39. Which of these quantities represents the smallest mass? 
A. 2.0  102 mg
B kg
C. 1.0  105 g *
D. 2.0  102 cg
20/04/1440

15. 40. Convert -77F to kalvin ? 
A K *
B K
C K
D K
41. Which of the following prefixes is not correct
A. deci d *
B. kilo K
C. Pico p
D. micro M
42. A lead sphere has a mass of 1.2x104 g, and its volume is 1.05x103 cm3.
Calculate the density of lead ? 
A g/cm3
B g/cm3 *
C. 1.26x107 g/cm3
D. 0.8 g/cm3

16. 43. The melting point of mercury is -36. 00F
43. The melting point of mercury is F. Express this temperature in degrees of Celsius and Kelvin.
A C and 147K
B C and 235K*
C C and 252K
D. 390C and 314K
44. Candela (cd) is the SI base unit of
A. time
B. mass
C. electrical current
D. Luminosity *
45. How many mL in L 
A. 5 mL*
B mL
C. 50 mL
D mL

17. 1. An anion is defined as 
A. a charged atom or group of atoms with a net negative charge. *
B. a stable atom.
C. a group of stable atoms.
D. an atom or group of atoms with a net positive charge.
2. Atoms of the same element with different mass numbers are called 
A. ions.
B. neutrons.
C. allotropes.
D. chemical families.
E. isotopes.*
3. How many neutrons are there in an atom of lead 82Pb whose mass number is 208? 
A. 82
B. 126*
C. 208
D. 290
E. none of them

18. 4. An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron) 
A. 15 p, 16 n, 15 e
B. 16 p, 15 n, 16 e *
C. 16 p, 31 n, 16 e
D. 32 p, 31 n, 32 e
E. 16 p, 16 n, 15 e
5. A magnesium ion, Mg2+, has 
A. 12 protons and 13 electrons.
B. 24 protons and 26 electrons.
C. 12 protons and 10 electrons.*
D. 24 protons and 22 electrons.
E. 12 protons and 14 electrons.
6. A sulfide ion, S2- , has: 
A. 16 protons and 16 electrons
B. 32 protons and 16 electrons
C. 16 protons and 14 electrons
D. 16 protons and 18 electrons *
E. 32 protons and 18 electrons

19. ماهو المركب الذي له نفس الصيغة الاولية مثل المركب C6H12O67.
Which compound has the same empirical formula as C6H12O6? A)
* C12H24O12 B)
C3H3O3 C)
CH2ON D)
CHO2
ماهو المركب الذي له نفس الصيغة الاولية مثل المركب C6H12O6 8.
Which of the following compounds is named lithium carbonate? A)
Na2CO3 B)
LiHCO3 C)
LiCO D)
* Li2CO3 9.
What is the formula for ammonium sulfate? A)
NH4SO4 B)
NH4(SO4)2 C)
* (NH4)2SO4 D)
NH4S

20. 10. 40Ca and 39K both have the same
(A) number of electrons
(B) atomic number
(C) mass number
(D) number of neutrons*
11. Give the number of protons, neutrons and electrons in
(A) 16 p, 16 n, 16 e
(B) 16 p, 33 n, 17 e
(C) 16 p, 17 n, 16 e *
(D) 16 p, 19 n, 16 e
12. which of the following is a metalloid
(A) Bi
(B) Cu
(C) Ca
(D) As *

21. 12. an example of a diatomic molecule is (A) H2O (B) HCl * (C) Ba2+
(D) O3
13. Which of the following expressions represents two molecules of water?
H2O
H2O2
2 H2O *
2 HO2
14. Which molecule from the following has the largest mass
A . HBr
B. HCl
C. HF
D. HI *

22. 15. Which of these compounds is a binary compound?
NaCl *
MgSO4
NaOH
HCN
16. Which of these compounds is a ternary compound?
NaCl
H2O
NaOH *
MgBr2
17. the species S2-, F-, and Cl- are all
cations
anions *
isotopes
Halogens

23. 16. An example of a monoatomic gas
Br2
HCl NO
Ar *
17. Atoms with the same number of electrons and number of protons are called…
ions
isotopes
neutral atoms *
different atoms
18. Al 3+ is an example of one of the following:
A. amonatomic anion
B. monatomic cation *
C. a polyatomic cation
D. a polyatomic anion
19. Which of the following molecule is a diatomic molecule ?
N2O
N2O4
NO2
NO *

24. 20. One of the following molecule is not a polyatomic molecule:
A. NH3
B. CH4
C. H2O
D. HCl *
21. SO42- is an example of one of the following:
A. amonatomic anion
B. monatomic cation
C. a polyatomic cation
D. a polyatomic anion *
22. The Stock system name for FCl3
A. Iron (II) chloride
Iron (III) trichloride
Iron (III) chloride *
D. monoiron trichloride

25. 23. Which of these ions is a monoatomic ions ?
Na+ *
SO42-
NO3-
NH4+
24. Which of these compounds is a ternary compound?
NaCl
H2O
NaOH *
MgBr2
25. Which of these compounds is a binary compound?
NaCl *
MgSO4
NaOH
HCN

26. 26. Which of these compounds is a ternary compound?
NaCl
H2O
NaOH *
MgBr2
27. molecules consist of the same element with different numbers of atoms and chemical structure are called … 
A. ions.
B. neutrons.
allotropes *
isotopes.
28. A magnesium ion, 12Mg2+, has 
A protons and 13 electrons.
B protons and 26 electrons.
C protons and 10 electrons. *
D protons and 22 electrons.

27. 29. A sulfide ion, 16S2- , has: 
A. 16 protons and 16 electrons
B. 32 protons and 16 electrons
C. 16 protons and 14 electrons
D. 16 protons and 18 electrons *
E protons and 18 electrons
30. Which of these pairs of elements would be most likely to form an ionic compound? 
A. P and Br
B. Cu and K
C. C and O
D. O and Zn *
E. Al and Rb
31. Which of these elements is most likely to be a good conductor of electricity? 
A. N
B. S
C. He
D. Cl
E. Fe *

28. 32. What is the formula for the ionic compound formed by calcium ions and nitrate ions? 
A. Ca3N2
B. Ca(NO3)2 *
C. Ca2NO3
D. Ca2NO2
33. Which of these pairs of elements would be most likely to form a molecular compound? 
A. Na and Br
B. Ca and O
C. C and O *
D. Zn and O
34. An atom of the isotope 16S-31 consists of how many protons, neutrons,
and electrons? (p = proton, n = neutron, e = electron) 
A. 15 p, 16 n, 15 e
B p, 15 n, 16 e *
C p, 31 n, 16 e
D p, 31 n, 32 e

29. 35. Which is the correct formula for copper(II) phosphate? 
A. Cu2PO4
B. Cu3(PO4)2 *
C. Cu2PO3
D. Cu(PO4)2
36. The correct name for NH4NO3 is 
A. ammonium nitrate. *
B. ammonium nitrogen trioxide.
C. ammonia nitrogen oxide.
D. hydrogen nitrogen oxide.
37. The correct name for PCl5 is 
A. monophosphate pentachloride
B. phosphorus chloride
C. chlorophosphate
D. phosphorus pentachloride *

30. 38. Which is the formula for the dinitrogen pentoxide
A. NO2
B. N2O5 *
C. N2O7
D. N2O2
39. The name for the group of those elements (F, Cl, Br, I) is:
A. Halogen group *
B. Nobel gas
C. Alkaline group
D. Transition metal group
40. of the following, the only empirical formula is:
P2O5 * O3
Na2O2
C3H6