1. Use a formula unit to identify the number of atoms and representative particles
IONIC COMPOUNDS
Names & Formulas
5 points
Name:
Period:
Positive ions are named like the elements. Negative ions end
in “-ide”. Ionic compounds are named with the positive ion
first and the negative ion second. For example…
Ions can be written as symbols, like the elements but with the
electric charge. Ionic compounds can be written as a
combination of symbols, called a formula. For example…
Na1Cl1 is named “sodium chloride”. It is made of one sodium
ion and one chloride ion.
Sodium chloride is written with the formula Na1Cl1. It is
made of one Na+1 and one Cl-1.
Mg1Cl2 is named “magnesium chloride”. It is made of one
sodium ion and two chloride ion.
Magnesium chloride is written with the formula Mg 1Cl2. It is
made of one Mg+2 and two Cl-1.
IONIC COMPOUNDS: NAMES
Name the compound and its ions.
IONIC COMPOUNDS: FORMULAS
Write a formula for the compound and a symbol for each ion.
________________________ What is the name for Ca1O1?
____________ What is the formula for magnesium sulfide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Be1F2?
____________ What is the formula for calcium chloride?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Al1Cl3?
____________ What is the formula for aluminum bromide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for K2O1?
____________ What is the formula for sodium oxide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Na3P1?
____________ What is the formula for potassium nitride?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
All the ions below are from s-block and p-block, so the rules
are the same as they were for the previous five compounds.
All the ions below are from s-block and p-block, so the rules
are the same as they were for the previous five compounds.
________________________ What is the name for Sr1O1?
____________ What is the formula for barium sulfide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Ba1F2?
____________ What is the formula for strontium chloride?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Ga1Cl3?
____________ What is the formula for thallium bromide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for Rb2O1?
____________ What is the formula for cesium oxide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
________________________ What is the name for In3N1?
____________ What is the formula for rubidium phosphide?
_________ _________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
IONIC COMPOUNDS
Names & Formulas
Name:
Period:
________________________ Choose any s-block METAL element and write its name in the space to the left.
________________________ Write the symbol of this element in the space to the left.
________________________ Write the name of this METAL element’s ion in the space to the left.
________________________ Write the symbol (including the electric charge!) of this element’s ion in the space to the left.
________________________ Choose any p-block NONMETAL element and write its name in the space to the left.
________________________ Write the symbol of this element in the space to the left.
________________________ Write the name of this NONMETAL element’s ion in the space to the left.
________________________ Write the symbol (including the electric charge!) of this element’s ion in the space to the left.
________________________ Write the name of the IONIC COMPOUND made from these ions in the space to the left.
________________________ Write the formula of this IONIC COMPOUND in the space to the left.
________________________ Write the names of three IONIC COMPOUNDS that are different than all others on this handout.
________________________
________________________
________________________ Write the formulas of three IONIC COMPOUNDS that are different than all others on this handout.
________________________
________________________
Why is Al2O3 the correct formula for aluminum oxide? (That is, why two aluminum ions and three oxide ions?)
MORE IONIC COMPOUNDS
Names & Formulas
(with polyatomic ions)
Name:
Period:
Polyatomic ions are groups of atoms that form a single ion.
The names and electric charges of polyatomic ions aren’t
always obvious, so you will always be given that information.
Polyatomic ions are groups of atoms that form a single ion.
The names and electric charges of polyatomic ions aren’t
always obvious, so you will always be given that information.
For example…
For example…
An ammonium ion has the symbol NH4+1
A nitrate ion has the symbol N1O3-1.
A carbonate ion has the symbol C1O3-2.
A sulfate ion has the symbol S1O4-2.
A phosphate ion has the symbol P1O4-3.
NH4+1 is the symbol for an ammonium ion.
N1O3-1 is the symbol for a nitrate ion.
C1O3-2 is the symbol for a carbonate ion.
S1O4-2 is the symbol for a sulfate ion.
P1O4-3 is the symbol for a phosphate ion.
Mg1 S1O3 is named “magnesium sulfate”. It is made of one
magnesium ion and one sulfate ion.
Magnesium sulfate is written with the formula Mg 1 S1O3. It is
made of one Mg+2 and one S1O3-2.
Na2 C1O3 is named “sodium carbonate”. It is made of two
sodium ions and one carbonate ion.
Sodium carbonate is written with the formula Na2 C1O3. It is
made of two Na+1 and one C1O3-2.
IONIC COMPOUNDS: NAMES
Name the compound and its ions.
IONIC COMPOUNDS: FORMULAS
Write a formula for the compound and a symbol for each ion.
______________________ What is the name for Na1 N1O3?
____________ What is the formula for magnesium sulfide?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for Ca1 C1O3?
____________ What is the formula for calcium chloride?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for Al1 P1O4?
____________ What is the formula for aluminum bromide?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for K2 S1O4?
____________ What is the formula for sodium oxide?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for NH4 Cl1?
____________ What is the formula for potassium nitride?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
All the ions below are from s-block and p-block, so the rules
are the same as they were for the previous five compounds.
All the ions below are from s-block and p-block, so the rules
are the same as they were for the previous five compounds.
______________________ What is the name for Sr1 S1O4-2?
____________ What is the formula for barium sulfate?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for Rb2 C1O3?
____________ What is the formula for cesium phosphate
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it made?
______________________ What is the name for Ga1 N1O3?
____________ What is the formula for thallium nitrate?
__________ __________ From which TWO ions is it made?
_______ _______ From which TWO ions is it mad
2. Calculate the formula mass of a given formula unit.
Mole Practice Problems
Name:____________
Chemistry
Period:_______
1.
Identify the representative particle in each of the following: (atom, molecule, formula unit)
a.
CuSO4
b.
H2O
c.
NaCl
d.
Zn
e.
Cu
f.
CO2
3.
Calculate the molar mass of each of the following (Show all your):
a.
Carbon dioxide
b.
C6H12O6
c.
Carbon tetrachloride
d.
HNO3
e.
Fe
3. Calculate the percent composition of a compound.
Percent Composition Worksheet
Find the percent compositions of all of the elements in the following compounds:
1)
CuBr2
Cu: ___________
Br: ___________
2)
NaOH
Na: ___________
O: ___________
H: ___________
3)
(NH4)2S
N: ___________
H: ___________
S: ___________
4)
N2S2
N: ___________
S: ___________
4. Determine a molecular formula from an empirical formula and vice versa.