Writing/naming Chemical Formulas
Formula/Molar Masses
Conversions
Percent Composition
Misc.
100
The superscript (charge) of one ion becomes the __________________ of the other ion.
What is subscript
100
How many atoms of each element are in Al2(SO4)3
Al: 2 S: 3 O: 12
100
What is needed to convert from grams to moles?
molar mass
100
What is the general equation for percentage?
(Part/whole) x 100
100
What is a polyatomic ion?
A group of covalently bonded atoms with an overall charge
200
What ending do you add to anions?
-ide
200
What is the molar mass of Al2S3?
150.14 g/mol
200
What is needed to convert from atoms to grams?
Avogadro's number AND molar mass
200
If 29.1 percent of a compound is carbon, what percent is oxygen?
70.9%
200
How do you determine the oxidation number (the charge) of an element?
By what group they are in.
300
What do we use when naming binary molecular compounds?
prefix system (mono, di, tri, etc)
300
What units do you use for formula mass?
amu (atomic mass units)
300
How many atoms are in 0.250 moles of silver?
1.51 x 1023 atoms of Ag
300
What is the percent composition of Cu2S?
Cu: 79.85% S: 20.15%
300
What should the overall charge of a compound be?
neutral (zero)
400
What is the name of the following compound; Fe(ClO3)2?
Iron (II) chlorate
400
What is the formula mass of KBr?
119.00 amu
400
How many grams is 6.6 moles of ZnO?
537.0 grams
400
What is the percent composition of copper (I) carbonate?
Cu: 67.9% C: 6.42% O: 25.6%
400
What do you need to put after the name of a transition metal to tell what the charge is?
roman numeral
500
What is the compound name for SBr4?
Sulfuer tetrabromide
500
What is the molar mass of (NH4)2SO4?
132.13 g/mol
500
How many atoms are in 444 grams of C6H6?
3.37 x 1024
500
What precent of sodium carbonate decahydrate is water?
62.97% water
500
How do you know if you need to use partentheses in a chemical formula?
If you need to put a subscript after a polyatomic ion.
M
e
n
u