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WorksheetsEmpirical / Molecular formulas
Total questions: 12
Worksheet time: 12mins
Name
Class
Date
1.
A formula with the lowest whole # ratio of elements in a compound is called
a)
Molecular Formula
b)
Chemical Formula
c)
Empirical Formula
d)
Distance Formula
2.
What is the empirical formula for C4H6?
a)
CH
b)
CH3
c)
C2H3
d)
C4H6
3.
What is the empirical formula for N2S3?
a)
NS
b)
N3S2
c)
N2S3
d)
N1S1.5
4.
Si2F6
Choose the correct empirical formula...
a)
SiF
b)
Si2F6
c)
SiF3
d)
Si6F2
5.
C2F6
Choose the correct empirical formula...
a)
CF
b)
C2F6
c)
C6F2
d)
CF3
6.
What is the best definition for subscript?
a)
The big number that tells you the number of molecules.
b)
The atomic number
c)
The little number that tells the number of atoms for each element.
7.
What is the best definition for coefficient?
a)
The big number that tells you the number of molecules.
b)
The little number that tells the number of atoms for each element.
c)
The atomic number
8.
A chemical formula that shows the actual # and kinds of atoms present in one molecule of a compound is called_________
a)
ionic formula
b)
covalent formula
c)
empirical formula
d)
molecular formula
9.
C2H6O
Which is the correct empirical formula
a)
CHO
b)
C2H6O
c)
C4H14O2
d)
None
10.
How many "C" are in CO2
a)
2
b)
1
c)
0
d)
3
11.
How many Carbons "C" are in C18H34O3
a)
18
b)
34
c)
3
d)
37
12.
Which molecular formula only has 12 hydrogens "H"?
a)
C4H10 (butane)
b)
C5H12 (pentane)
c)
C12H22O11 (sugar)
d)
C8H10N4O2 (caffeine)
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