WorksheetsMoles, Equations and Calculations
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
A mole measures an amount of substance based on the number of ...
a)
grams
b)
liters
c)
particles
d)
electrons
2.
A particle can be ...
a)
atoms
b)
molecules
c)
formula units
d)
all of these
3.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
4.
In chemistry, a "mole" is:
a)
The mass of an atom
b)
a large number used to count particles
c)
based on the volume of a substance
5.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
6.
How many atoms of Lead are in a mole of Lead?
a)
82
b)
207.2g
c)
6.02 x 1023
d)
208
7.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
8.
How do we get mass from moles?
a)
multiply by avogadro's number
b)
multiply by molar mass
c)
divide by avogadro's number
d)
divide by molar mass
9.
Name the part in red:
H2 + O2 -> H2O
H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
10.
Which of the following coefficients has to be changed in the following equation?
α Mg+β HCl → δ MgCl2 +ϵ H2
a)
α (for Mg)
b)
β (for HCl)
c)
δ (for MgCl2)
d)
ϵ (for H2)
100 %
