WorksheetsMoles and Molar Mass
Total questions: 15
Worksheet time: 19mins
Name
Class
Date
1.
Molar mass is in units of ________.
a)
grams
b)
grams/mole
c)
mole
d)
moles/gram
2.
What is the definition of molar mass?
a)
number of grams per one mole of a substance
b)
whole number ratio that is a multiple of a chemical formula
c)
simplest, whole number ratio of a chemical formula
d)
6.02 x 10^23 particles per one mole of a substance
3.
How many atoms are found in 1 mol of Xenon atoms?
a)
6.022x1023
b)
3.011x1023
c)
1.204x1024
d)
6.022x1024
4.
What is the molar mass of sodium?
a)
11 g/mol
b)
23 g/mol
c)
45.98 g/mol
d)
3 g/mol
5.
What is the molar mass of fluorine gas?
(beware -check your diatomics!)
a)
18.998 g/mol
b)
38 g/mol
c)
9 g/mol
d)
18 g/mol
6.
What do you do to gain confidence before doing something challenging?
4 lines
7.
What is the mole used for?
a)
To measure the amount of grams in a substance
b)
To measure the amount of atoms or molecules in a substance
c)
To measure the amount of energy in a substance
d)
To measure the amount of bonding in a substance
8.
Which would have more atoms?
a)
1 mole of Li
b)
1 mole of Au
c)
1 mole of Si
d)
None, all are equal
9.
What is the molar mass of Carbon?
a)
6
b)
12
c)
20
d)
40
10.
How many molecules of sugar (C6H12O6) are in a mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
11.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
12.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
13.
How many moles are present in 32.3 grams of carbon dioxide (CO2)?
a)
44.01 moles
b)
1421.52 moles
c)
32.3 moles
d)
0.73 moles
14.
What would weigh more, a mole of nitrogen or a mole of carbon?
a)
nitrogen
b)
carbon
c)
they would weigh the same
d)
you can't weigh nitrogen, it is a gas
15.
If you could tell all of your teachers one thing about what is going on in your life, what would it be?
4 lines
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