Name: ____________________________________
Class: _____________
Self Assessment: Concept of Moles
1. A mole describes what number of things?
23
a) 6.02 10
21
b) 6.02 10
20
c) 6.02 10
22
d) 6.02 10
2. Which of the following number of things are commonly expressed in moles?
a) atoms and molecules
b) protons and neutrons
c) bonds and charges
d) compounds and mixtures
3. The official standard for the definition of the mole is based on _____.
a) hydrogen
b) carbon 12
c) carbon 14
d) oxygen
4. One mole of iron (Fe) contains how many atoms?
a) 1
b) 26
23
c) 6.02 10
d) 55.8
5. The mass of one mole of oxygen (O) is _____.
a) 1 gram
b) 8 grams
23
c) 6.02 10
d) 16 grams
PAGE 1
grams
Date: _____________
Name: ____________________________________
Class: _____________
Date: _____________
Self Assessment: Concept of Moles
6. The representative particle of an element listed in the periodic table is the _____.
a) proton
b) electron
c) molecule
d) atom
7. If a 1 liter solution has a molarity of 4 M, how many moles of solute does it contain?
a) 1
b) 4
23
c) 6.02 10
d) 0.25
8. Molar mass is the mass in grams of how many moles?
a) 2
b) 1
23
c) 6.02 10
d) 12
9. What must be added together to determine the mass of a molecule?
a) the masses of its bonds
b) the masses of its charges
c) the masses of its electrons
d) the masses of its atoms
10. Two moles of water contain how many molecules?
a) 6
b) 2
23
c) 12.04 10
23
d) 6.02 10
PAGE 2
ANSWER KEY
1. a
2. a
3. b
4. c
5. d
6. d
ANSWER KEY Page 1
7. b
8. b
9. d
10. c