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WorksheetsNGSS chemistry Unit 2 Midterm review
Total questions: 51
Worksheet time: 39mins
Name
Class
Date
1.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
2.
Same repel, opposites
a)
avoid
b)
attract
c)
push
d)
pull
3.
Is this ionic bond drawn correctly?
a)
Yes
b)
No
4.
Is hydrogen considered a metal or a non-metal?
a)
A metal
b)
Nonmetal
c)
Metalloid
5.
How are covalent bonds formed?
a)
Sharing of electrons
b)
Transfer of electrons
6.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
7.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
8.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
9.
Where are the metalloids located on the periodic table?
a)
Blue
b)
Red
c)
Green
10.
Where are the nonmetals located on the periodic table?
a)
Blue
b)
Red
c)
Green
11.
Which bond would be the least polar?
a)
H-F
b)
H-O
c)
H-H
d)
H-Br
12.
Which bond would be the most polar?
a)
H-I
b)
H-Br
c)
H-Cl
d)
H-F
13.
What is a polar molecule?
a)
One that has a partial negatitive on one end and a partial positive on the other
b)
a molecule with little vibration
c)
an ionic compound
d)
the nonpolar bonds are arranged sequentially
14.
For the structural formula shown, what is the chemical formula?
a)
NO
b)
N2O2
c)
NO2
d)
N2O
15.
The molecule shown has been called "laughing gas" and has been used in dentistry as a pain killer. What is its chemical name?
a)
Nitrogen oxide
b)
dinitrogen dioxide
c)
dinitrogen oxide
d)
nitrogen dioxide
16.
What is the proper name for CaCl2?
a)
Calcium dichloride
b)
Monocalcium dichloride
c)
Calcium chloride
d)
Calcium chlorine
17.
What is the proper name for Cu2O?
a)
Copper oxide
b)
dicopper oxide
c)
copper (II) oxide
d)
copper (I) oxide
18.
What is the proper name for S2O2?
a)
Sulfur oxide
b)
Sulfur dioxide
c)
sulfur (II) oxide
d)
disulfur dioxide
19.
What is the formula for chromium (I) selenide?
a)
Cr2Se
b)
CrSe
c)
CrSe2
d)
Cr2Se2
20.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
21.
With the ________ you must have 8 electrons on the outside ring.
a)
anions
b)
ionic bonds
c)
cations
d)
octet rule
22.
SO3
a)
Monosilicon Trioxide
b)
Sulfate trioxide
c)
Sulfur trioxide
d)
Monosulfate oxide
23.
Phosphorus tribromide
a)
PBr
b)
PBr7
c)
P4Br4
d)
PBr3
24.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
25.
Atoms that lose electrons become...
a)
negatively charged
b)
postively charged
c)
remain neutral, no charge
d)
losers
26.
Atoms that gain electrons become...
a)
negatively charged
b)
positively charged
c)
remain neutrally charged
d)
21
27.
If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?
a)
Al3+
b)
Al13+
c)
Al10+
d)
Al10-
28.
If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?
a)
O10-
b)
O8+
c)
O2-
d)
O10+
29.
Valence electrons are those in the ______ energy level of an atom.
a)
innermost
b)
outermost
c)
middle
30.
A charged particle that has gained at least one electron is called a(n) _____.
a)
Anion
b)
Cation
c)
Anonion
d)
chemistry cat
31.
What is the ionic compound formed between Ba and P?
a)
Ba2P3
b)
Ba3P2
c)
BaP
d)
Ba2P2
32.
The compound formed by Mn (IV) and S would be which of these choices?
a)
Mn4S2
b)
MnS
c)
MnS4
d)
MnS2
33.
What is the ionic compound formed between Ca and O?
a)
CaO
b)
Ca2O
c)
Ca2O2
d)
CaO2
34.
What will be the compound name of the following chemical formula?
NaCl
NaCl
a)
Potassium Chloride
b)
Sodium Chloride
c)
Calcium Chloride
d)
Sodium Chlorine
35.
What is the formula of Sodium oxide?
a)
Na2O
b)
NaO2
c)
Na2O2
d)
Na2O
36.
Carbonate
a)
Cr2O4-2
b)
CH3COO-
c)
CO3-2
d)
CN-
37.
The correct chemical formula for Potassium hydroxide is ...
a)
KOH
b)
K(I)OH
c)
K(OH)2
d)
NaOH
38.
Nitrite
a)
NO2-
b)
NO3-
c)
MnO4-
d)
NH4+
39.
Hydroxide
a)
Cr2O4-2
b)
Cr2O4-2
c)
O3-2
d)
OH-
40.
Phosphate
a)
PO4-3
b)
O2-2
c)
OH-
d)
CO3-2
41.
Sulfate
a)
S2O3-2
b)
O2-2
c)
SO4-2
d)
SO3-2
42.
NO3-
a)
Nitrite
b)
Sulfite
c)
Nitrate
d)
Sulfate
43.
Ni(OH)2 is the chemical formula for...
a)
Nickel hydroxide
b)
Nickel II hydroxide
c)
Nickel peroxide
d)
Nickel I hyroxide
44.
NaNO3 is called...
a)
Nitrate sodiate
b)
Sodium nitrate
c)
Sodium I nitrate
d)
Nitrogen nitrate
45.
What is the correct formula for Zinc(II) Bromide?
a)
ZnBr2
b)
ZNBr
c)
ZnBr
d)
Z2Br
46.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
47.
NO2
a)
ionic bond
b)
covalent bond
48.
NaCl
a)
Ionic bond
b)
Covalent bond
49.
MgBr2
a)
Ionic bond
b)
Covalent bond
50.
Nitrogen dioxide
a)
Ionic bond
b)
Covalent bond
51.
Aluminum flouride
a)
Ionic bond
b)
Covalent bond
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