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WorksheetsUnit 6 Test Review PS
Total questions: 37
Worksheet time: 20mins
Decide whether the following compound is ionic or covalent based upon the location of each atom on the Periodic Table. CaCl2
Covalent
Ionic
Decide whether the following compoun is ionic or covalent based upon the location of each atom on the Periodic Table. CH4
Covalent
Ionic
Which type of bonding does the picture represent?
Covalent
Ionic
Metallic
Multivalent
Focus on the cartoom which says Goldilocks. What type of bonding is this showing?
Covalent
Ionic
Metallic
Multivalent
Look carefully at the caption at the bottom of the cartoon. What type of bonding do you think is being described?
Covalent
Ionic
Metallic
Multivalent
The forces that hold different atoms together are called
physical bonds.
nuclear forces.
chemical bonds.
electric currents.
A compound differs from a mixture because it
always remains frozen even at higher temperatures.
is formed from two cations (positively charged ions).
can form only in the presence of heat energy.
always contains the same elements in the same proportion.
Each atom of hydrochloric acid, HCl (aq), contains one atom of hydrogen and
two atoms of oxygen.
two atoms of chlorine.
one atom of chlorine.
one atom of oxygen.
Each molecule of table sugar, C12H22O11, contains
12 atoms of carbon.
6 atoms of carbon.
1 atom of carbon.
0 atoms of carbon.
Often atoms join so that each atom will have
an even number of electrons.
an outermost energy level that is full of electrons (has the magic number between them).
an outermost energy level that is full of electrons (has the magic number (octet) between them).
more electrons than either protons or neutrons.
An ionic bond is a bond that forms between
atoms with neutral charges.
ions with opposite charges (between a cation and an anion).
one atom’s nucleus and another atom’s electrons.
the electrons of two different atoms.
Covalent bonds are formed between
two or more metal atoms.
two or more compounds.
two or more nonmetal atoms.
two ions.
In which type of bond do atoms share electrons?
covalent bonds.
metallic bonds.
ionic bonds.
polyatomic ions.
The name dinitrogen tetraoxide tells you that this compound contains
two nitrogen atoms and four oxygen atoms.
two nitrogen atoms and two oxygen atoms.
four nitrogen atoms and four oxygen atoms.
four nitrogen atoms and two oxygen atoms.
Fe2O3 is named iron (III) oxide because it contains
O+3 ions.
three iron atoms.
Fe+3 ions.
three oxygen atoms.
When copper combines with oxygen to form copper (II) oxide (CuO), the charge of the oxide ion is ________.
O-4
O-3
O-2
O-1
The name for the compound with the formula CuBr2 would be written as _________. (Hint: Use reverse crossover to get the oxidation states so you know how to properly name it.)
copper bromine
copper (I) oxide
copper (II) bromide
copper (III) bromide
Would you normally expect neon (Ne), a Noble Gas located in group 18, to form compounds?
No, neon has eight electrons in its outermost energy level and is stable.
Yes, but neon is a rare gas and difficult to find.
No, neon needs six electrons to fill its outermost energy level.
Yes, neon needs six electrons to fill its outermost energy level.
A student is testing the electrical conductivity of two solid substances which are placed into water. Substance A has high electrical conductivity and substance B has low electrical conductivity. Based on this information, what must be true regarding these two substances?
There is more energy stored in chemical bonds in substance A than there is in substance B.
Electrons in substance A are able to move more easily than electrons in substance B.
The atomic nuclei in substance A have more mass than the atomic nuclei in substance B.
Substance A contains a higher percentage of radioactive atoms than does substance B.
How many total atoms does Ca(OH)2 have?
2
3
5
7
How many total atoms does Hg2Cl2 have?
2
3
4
5
How many total atoms does KCl have?
1
2
3
4
How many total atoms does P2O5 have?
2
3
5
7
How many atoms does four molecules of water have (4H2O)?
4
8
12
16
When elements combine to form a(n) ______________, the resulting properties may be very different from those of the elements that make it.
mixture(s)
compound(s)
The chemical formula H2O means a water molecule contains one ___________ for every two __________ .
hydrogen; oxygens
oxygen; hydrogens
Atoms bond in compounds when their ______________ interact.
protons
electrons
When two chlorine atoms bond, they ______________ a pair of electrons. (Hint: Find chlorine (Cl) on the Periodic Table.)
share
transfer
A compound whose molecules contain one boron atom and three fluorine atoms (BF3) would be named __________ ___________ . (Hint: Use your Periodic Table to see where boron and fluorine are located.)
Boron trifluoride
Boron fluoride
The charge of each ion in the ionic compound FeS is _______________. (Hint: Use reverse crossover to determine the oxidation states and check to see if the S ion matches with the periodic table’s oxidation state.)
Fe+1 and S–1
Fe+2and S–2
The chemical formula for the ionic compound which consists of nickel (III) ions [Ni +3] and oxide ions [O-2] is _______________ (Hint: Use crossover to determine the correct formula.)
Ni2O3
Ni3O2
A compound consisting of Cd+2 and Br -1 ions would be named _________________________.
Cadmium (II) bromide
Cadmium bromide
If a compound has the name sulfur trioxide, which choice would be the correct formula?
SO
SO2
SO3
O3S
If a compound has the name potassium sulfide, which choice shows the correct formula?
K2SO4
KS2
K2S
KS
How do you know that you have a polyatmic ion in your chemical formula?
look for it on the Periodic Table
look to see that you have one uppercase letter in both the cation and anion
look to see if you have more than one upper case letter in either the cation or anion
look for the number 3 as a subscript
Where are the transition metals located on the Periodic Table?
Group 1
Group 2
Groups 3-12
Group 18
If you have a metal that is a transition metal, what do you have to do to name it in the proper manner?
use prefixes to show how many there are of each type
use a Roman numeral to show the oxidation state of the metal
name the polyatmic ion by looking at the chart Mrs. Mohan gave you
name the metal first and change its ending to -ide
