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WorksheetsChemistry Mid Term Review
Total questions: 75
Worksheet time: 2hrs 37mins
This is a correct dot diagram for fluorine (F)
true
false
What are valence electrons?
The innermost electrons
The outermost electrons
What is the octet rule?
Elements can only have 8 electrons in its outermost shell
The elements must form an octopus like structure
Name the following compound:
N2O4
dinitrogren tetraoxide
tetranitrogen dioxide
nitrogen oxide
dinitrogen tetraoxygen
Name the following compound:
CO2
monocarbon dioxide
carbon oxide
carbon dioxide
oxygen carbonide
Name the following compound:
CCl4
monocarbon quadchloride
carbon tetrachloride
carbon chloride
monocarbon quadchloide
Name the following compound:
NF3
nitrogen triflouride
mononitrogen triflouride
nitrogen flouride
tetranitroflouide
Name the following compound:
H2O
hydrogen oxide
dihydrogen oxide
trihydroxide
dihydrogen monoxide
Write the formula for:
dinitrogen tetroxide
N2O4
NO2
NO
N4O8
Write the formula for:
dinitrogen pentoxide
NO
N2O5
2NO5
O5N
Write the formula for:
disulfur decafluoride
2SF10
SF5
S2F10
F10S2
What can be generalized about covalent bonds?
Electrons will be exchanged.
Electrons will be transferred.
Electrons will be given and taken.
Electrons will be shared.
Which of the following is the best representation of a molecule of fluorine (F2)?
A
B
C
D
Carbon is in 4A, so how many bonds can it form based on electrons needed to fill its outer shell?
1
3
4
5
What two types of atoms make a covalent bond?
2 Nonmetals
1 Nonmetal & 1 Metal
2 Metals
2 Noble Gases
This image shows the bonding between Lithium and Fluorine. What does the red arrow show?
electrons being shared
electrons being transferred to Fluorine
electrons being transferred to Lithium
electrons being destroyed
Which of the following is NOT a step in forming an ionic bond?
One atom shares its electrons with another one
Opposite charged ions form due to the transfer of electrons
One atom gives electrons to another one
Oppositely charged ions attract
An ionic bond is the attraction between: (Select ALL that apply)
oppositely charged ions
similarly charged ions
metals and nonmetals
neutral atoms
cations and anions
Which of the following is the correct formula for these two ions: Al+3 & S-2
AlS3
Al2S3
Al3S2
Al3S
If I had a cation with a charge of 2+ how would you describe the formation of that ion?
gained 2 electrons
lost 2 electrons
gained 4 electrons
lost 4 electrons
If I had an anion with a charge of 3- how would you describe the formation of that ion?
gained 2 electrons
lost 2 electrons
gained 3 electrons
lost 3 electrons
Looking at the periodic table, when the alkali metals form an ion what charge do they have?
1-
1+
2-
2+
3-
Looking at the periodic table, when the alkaline earth metals form an ion what charge do they have?
1-
1+
2-
2+
3-
Looking at the periodic table, when the halogens form an ion what charge do they have?
1-
1+
2-
2+
3-
Nitrogen, N, will form which of the following ions?
N
N-3
N-5
N+5
In the compound aluminum oxide, which is the cation?
[ Al ] +3
Al
[ O ] -2
O
When ionic compounds form what is the overall charge?
neutral
positive
negative
What is responsible for bringing cations and anions together?
the size of the ions
the opposite charges are attracted to one another
the similar charges are attracted to one another
depends on what period they're in
What is another name of an ionic compound
salt
cation
anion
polyatomic ion
Which is the correct name for CaBr2?
Calcium Bromine
Bromine Calcium
Calcium Bromide
Bromine Chloride
Calcium Bromate
where are the metaloids found
far left, vertical
stair step/diagonal
far right horizontal
at the bottom
What is the name of group number 1?
halogens
noble gases
alkali metals
alkaline earth metals
What is the name of group number 2?
transition metals
halogens
metaloids
alkaline earth metals
What group number are the halogens found?
18 (8A)
1
2
17 (7A)
Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.
numbers, rows
masses, rows
masses, column
numbers, column
A grouping of elements based on similar chemical properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
A row on the Periodic Table of Elements
family
period
row
isotope
___________ is the only metal that is a liquid at room temperature.
Platinum
Water
Tin
Mercury
Metals (select all that apply)
are found on the right side of the periodic table.
are found on the left side of the periodic table.
are good conductors of heat and electricity.
are brittle.
are malleable and ductile.
Nonmetals (select all that apply)
are found on the right side of the periodic table.
are found on the left side of the periodic table.
are good conductors of heat and electricity.
are brittle.
can be solid, liquids, or gases at room temperature.
Which element is found in group 2, period 6?
Oxygen (O)
Barium (Ba)
Selenium (Se)
Carbon (C)
Which halogen is found in period 4?
Krypton (Kr)
Xenon (Xe)
Bromine (Br)
Iodine (I)
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
Zinc
Copper
Nickel
Germanium
What electron configuration matches an oxygen atom?
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
The electron configuration of an atom is 1s22s22p6. The number of electrons in the atom is
3
6
8
10
Which electron configuration belongs to Chlorine (Cl)?
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p7
The atom with the largest atomic radius in Group 18 is -
Ar
He
Kr
Rn
As you move down a group, atomic radius increases because -
you add more and more neutrons
you add more and more protons
you add more and more shells (energy levels)
you add more atomic mass
The atom with the largest atomic radius in Period 4 (row 4) is -
K
Kr
Fe
Fe
Francium (Fr) has the lowest ionization energy in Group 1 because -
it has the smallest number of valence electrons
it has the greatest atomic mass
it has the greatest number of protons, so it attracts its electrons the strongest
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
Of the halogens, which has the smallest radius?
F
Br
He
At
How many moles of sodium chloride are in a 321.8 g sample?
18810 moles
3.315 x 1024 moles
5.507 moles
4.767 moles
how many atoms are contained in a 456 g sample of carbon dioxide?
10.34 atoms
6.237 x 1024 atoms
1.871 x 1025atoms
2.079 x 1024 atoms
One mole of sulfur (S) is equal to home many atoms?
32 atoms
16 atoms
1.20 x 1023 atoms
6.022 x 1023 atoms
To convert from moles to particles, you should multiply by ....
To convert from particles to moles, you should multiply by ....
To convert from moles to grams, you should multiply by ....
To convert from particles to moles, you should multiply by ....
To convert from grams to moles, you should multiply by ....
How many moles are in 50 grams of Calcium Bromide, CaBr2?
0.75
1.25
0.25
0.55
How many moles are in 450g Potassium chloride? Write a formula first.
6.0 g
6.0 mol
74.6 g/mol
33.570 mol
What is the molar mass when you have 4 moles of CO2?
176 grams
54 grams
128 grams
280 grams
The mole can be used to measure (SELECT ALL CORRECT ANSWERS)
The amount of atoms
The amount of molecules or compounds in a substance
The amount of particles
The amount of fission or fusion decay over time
