WorksheetsCHM1135 Exam 2 review 2026
Total questions: 13
Worksheet time: 7mins
Which of the following ions has a charge of -2
sodium ion
nitrogen ion
oxygen ion
potassium ion
How many hydrogen atoms are in 5.00 moles of hydrogen?
5
3.01x1024
6.02x1023
50
What is the correct name for LiF
Lithium Fluorine
Lithium Fluoride
Fluorine Lithium
Lithium monofluoride
Which compound represents the correct structure for sodium nitride?
NaN
NaN3
Na3N
Na2N3
Name this compound: Na2S
sodium sulfur
disodium sulfide
sodium sulfide
sulfide sodium
Which of the following elements contains 6 valence electrons?
Si
P
Cl
S
How many molecules are in 3.739g of calcium bromide?
7.77 molecules
0.0187 molecules
1.126x1022 molecules
6.02 x10-29 molecules
How many Na atoms are in 2.50 moles of Na2O2
6.02x1023
2
3.01x1024
195
The compound phosphorus trichloride has a ________shape.
bent
linear
pyramidal
trigonal planar
What is the molecular shape of CH4?
tetrahedral
round
pyramidal
linear
The amount of radioisotope that remains after two half lives have passed is:
10%
20%
25%
50%
The half life of a specific radionuclide is 6 days. How much of an 10 mg sample will be left after 18 days?
5mg
10g
2.5mg
1.25mg
Pyramidal
