CHEMISTRY 11 / 20
Unit 3 ~ Learning Guide Name: ______________________________
Instructions:
Using a pencil, complete the following notes as you work through the related lessons. Show ALL
work as is explained in the lessons. You are required to have this package completed BEFORE
you write your unit test. Do your best and ask questions if you don’t understand anything!
Combining Capacity and Naming Compounds:
1. Certain groups (columns) on the periodic table have combining capacities (also known as
charges) that you should memorize. Understanding that there is a pattern to these charges will
help you do that. Fill in the table below to see the pattern.
Period
Combining Capacity
1
2
13
14
Do not usually form ions but if they do the charge is +4 or -4
15
-3
16
17
18
2020-12-11
Do not form ions!
Page 1 of 10
CHEMISTRY 11 / 20
2. Determine the combining capacity of iron in the compound FeCl3. Show your work!
3. Determine the combining capacity of lead in the compound Pb3P2. Show your work!
4. Provide names for the following Group 1/2 Ionic Compounds
Formula
Name
BeO
Ba3P2
5. Provide names for the following Molecular/Covalent Compounds
Formula
Name
SiO4
N3O
P3O8
2020-12-11
Page 2 of 10
CHEMISTRY 11 / 20
6. There are a number of chemicals which have common names that you should know. Fill in the
table below to help you memorize these. Use the internet to find a food that each of these is
found in or something they are used for.
Formula
Name
Food or Use
CH3OH
ethanol
C6H12O6
sucrose
water
H2O2
ozone
NH3
Writing the Formula of a Compound:
1. Provide formulas for the following Ionic Compounds. Use the work box to show how you
balanced the combining capacities.
Name
Work
magnesium oxide
aluminum sulfate
iron (III) hydroxide
2020-12-11
Page 3 of 10
Formula
CHEMISTRY 11 / 20
2. Provide formulas for the following Covalent Compounds.
Name
Formula
fluorine monobromide
pentasulfur heptaselenide
carbon tetrachloride
3. If you see •H2O at the end of a compound's formula what word must go at the end of the
compound's name?
.
Multivalent Metals and Polyatomic Ions:
1. Provide names for the following Ionic Compounds which contain multivalent metal. Use the
work box to show how you determined the correct Roman Numeral to use.
Formula
Work
FeS
Ni2O3
PtO2
Sb3P5
2020-12-11
Page 4 of 10
Name
CHEMISTRY 11 / 20
2. What prefix is used as a replacement for the word hydrogen in some polyatomic ions?
3. Name the following ternary compounds. The easy way to recognize that these are all ternary
compounds is that they all contain at least 3 elements which means the formula will have at
least 3 capital letters. Remember to use your data table to name the polyatomic ions correctly.
Some of these will require roman numerals but some will NOT. If a roman numeral is
required show your work.
Formula
Work
AuClO
Sr3(PO4)2
Bi(CN)5
Hg3PO4
CaSO3
(NH4)2S
Na3BO3
2020-12-11
Page 5 of 10
Name
CHEMISTRY 11 / 20
Names and Formulas of Acids
1. Name the following acids. Remember to use the prefix hydro if the acid contains a simple
element. If the acid contains a polyatomic ion you change an ate ending to ic and you change an
ite ending to ous.
Formula
Name
H2S
H2SO4
H2SO3
2. Provide formulas for the following acids. Be sure to use the correct number of hydrogen atoms to
match the charge on the negative ion.
Name
Formula
hydroiodic acid
hydrophosphoric acid
phosphoric acid
nitrous acid
3. Acids formulas usually start with H. Organic acids however will END with an H. What is the
name and formula of the polyatomic ion that you will always find at the end of a base?
2020-12-11
Page 6 of 10
CHEMISTRY 11 / 20
Overall Unit 3 Review:
1. Name or write the formula & state whether the substance is molecular (M), Ionic (I), Acid (A),
Element (E). Note that (aq) simply means the compound dissolves in water and will not affect
the name
Type
M, I, A or E
1.
Chemical Name
sodium chloride
CaCO3
2.
3.
4.
nickel (III) bisulfate
sodium hydroxide
CaO
5.
MgSO4•7H2O
6.
7.
8.
9.
10.
Chemical Formula
carbon dioxide
acetic acid
carbon
calcium sulfate
Na2SiO3
11.
Ca(HCO3)2
12.
2020-12-11
Page 7 of 10
CHEMISTRY 11 / 20
13.
14.
15.
16.
magnesium hydroxide
potassium chloride
sodium thiosulphate pentahydrate
sodium hypochlorite
Na2CO3
17.
HCl (aq)
18.
19.
potassium nitrate
CuSO4•5H2O
20.
Mg
21.
22.
magnesium oxide
KI
23.
H2SO4 (aq)
24.
25.
silicon monocarbide
Iron
26.
2020-12-11
Page 8 of 10
CHEMISTRY 11 / 20
NH4Cl
27.
It is important that you are able to count the number of each type of atom in a formula. Each atom will
have as many as 3 numbers that "belong" to it. If a number comes directly after the atom then it belongs
to that atom. If an atom is inside a bracket then the number after the bracket belongs to that atom. Finally
if there is a number in front of the compound (known as a coefficient) then that number belongs to all of
the atoms.
Here is an example:
3 Fe2(SO4)3
Fe:
Fe has its own number 2 and the 3 at the front. Therefore we have 3 x 2 = 6 Fe atoms
S:
S does not have its own number which means you start with 1. However it is inside the bracket
and you have a 3 out front. Therefore we have 1 x 3 x 3 = 9 S atoms
O:
O has its own number 4, the 3 after the bracket and the 3 in front.
Therefore we have 4 x 3 x 3 = 36 O atoms
2. Determine the number of each type of atom in the following compounds. Show your work where
appropriate (which numbers you multiplied to get each atom)
Formula
Atoms
CuBr2
Ca(MnO4)2
2 CH3COOH
4 Hf(HPO4)2
2. A sample of Zr(H2PO4)4 that contains 6 000 oxygen atoms must also contain how many hydrogen
atoms? Hint use a unit conversion to convert from O atoms to H atoms
2020-12-11
Page 9 of 10
CHEMISTRY 11 / 20
Answers:
Combining Capacity and Naming Compounds:
1.
+1, +2, +3, None, -3, -2, -1
2. +3
3. +2
Multivalent Metals and Polyatomic Ions:
1. These are the correct Roman Numerals: II, III, IV, and V
3. Three of the formulas require Roman Numerals. They are I, V and I
Overall Unit 3 Review:
1. 20) Roman Numeral is II
2.
Formula
Atoms
CuBr2
1 Cu atom, 2 Br atoms
Ca(MnO4)2
1 Ca atom, 2 Mn atoms, 8 O atoms
2 CH3COOH
4 C atoms, 4 O atoms, 8 H atoms
4 Hf atoms, 8 H atoms, 8 P atoms, 32 O atoms
4 Hf(HPO4)2
3. 3000 H atoms
2020-12-11
Page 10 of 10