WorksheetsChemistry Review
Total questions: 40
Worksheet time: 22mins
Name
Class
Date
1.
Cl-,Na+
a)
NaCl
b)
Na1Cl1
c)
ClNa
d)
Na-1Cl
2.
Li+1, Br-1
a)
Li-1Br+1
b)
LiBr
c)
BrLi
d)
Li1Br1
3.
Mg+2,F-1
a)
F2Mg
b)
Mg2F2
c)
MgF2
d)
MgF-2
4.
K+, O-2
a)
KO
b)
K2O
c)
K-2O2
d)
O2K
5.
What is the chemical name for the compound with the symbol:
a)
sodium sulfide
b)
sodium fluoride
c)
lithium oxide
d)
magnesium sulfide
6.
A chemical bond formed when two atoms share electrons is called a(n)?
a)
covalent bond
b)
ionic bond
c)
polyatomic bond
d)
crystal bond
7.
What is the chemical formula for aluminum sulfide?
a)
AlS
b)
AlsS
c)
Al2S3
d)
Al3S2
8.
In the chemical formula for an ionic compound, which term is written first?
a)
subscript
b)
symbol for element with positive oxidation number
c)
symbol for element with negative oxidation number
d)
charge
9.
Electrons that exist in the outer energy level of an atom are referred to as:
a)
outer electrons
b)
shell electrons
c)
nucleons
d)
valence electrons
10.
The superscript of a chemical formula tells us:
a)
oxidation number
b)
number of atoms in a molecule
c)
number of units of each substance
d)
valence electrons
11.
In this isotope of Lithium, how many neutrons exist?
a)
3
b)
8
c)
5
d)
11
12.
A substance made of the combined atoms of 2 or more elements is called:
a)
formula
b)
compound
c)
covalent bond
d)
isotope
13.
An atom is chemically stable when:
a)
it is bonded with one other atom
b)
its energy is stable
c)
when the outer energy level is complete/full
d)
when it has 6 valence electrons
14.
The image is an example of what?
a)
ion
b)
isotope
c)
atom
d)
molecule
15.
A chemical bond characterized by sharing of electrons between a nonmetal and another nonmetal is a:
a)
covalent bond
b)
ionic bond
c)
isotope
d)
attraction of opposite charges of ions
16.
A chemical bond is:
a)
what elements a compound contains
b)
force that holds together the atoms in a substance
c)
positively or negatively charged atom
d)
always covalent
17.
In this isotope of Lithium, how many protons exist?
a)
3
b)
8
c)
5
d)
11
18.
NaCl is an example of:
a)
an atom
b)
a compound
c)
a mixture
d)
an element
19.
What is an atom of the same element with a different number of neutrons?
a)
ion
b)
isotope
c)
electron
d)
molecule
20.
What element has the chemical symbol Sn?
a)
selenium
b)
tin
c)
Silicon
d)
Sulphur
21.
How many protons in an atom of Phosphorus?
a)
31
b)
14
c)
15
d)
16
22.
The noble gases have an oxidation number of:
a)
-1
b)
+1
c)
0
d)
+3
23.
How many valence electrons does the Alkaline Earth Metals all have?
a)
1
b)
2
c)
3
d)
4
24.
Horizontal rows on the periodic table are known as:
a)
groups
b)
families
c)
periods
d)
rows
25.
The atomic number tells us the number of:
a)
neutrons
b)
protons + neutrons
c)
protons
d)
neutrons + electrons
26.
A coefficient in a chemical formula tell us what?
a)
# of atoms in a molecule
b)
oxidation #
c)
# of total atoms in a molecule
d)
# of units of each molecule
27.
An ionic bond is a bond between:
a)
a halogen and a noble gas
b)
an alkali earth metal and an alkaline earth metal
c)
a metal and nonmetal
d)
a nonmetal and a nonmetal
28.
When a mixture is the same throughout it is said to be:
a)
heterogeneous
b)
complete
c)
homogeneous
d)
compounded
29.
A pure substance containing two or more kinds of elements is a:
a)
formula
b)
mixture
c)
compound
d)
element
30.
What type of drawing represents ALL of the electrons an atom possesses?
a)
Lewis Dot Structures
b)
Periodic Table
c)
Bohr Model
d)
Plum Pudding Model
31.
This element has the symbol Na.
a)
potassium
b)
sodium
c)
narwhalium
d)
lithium
32.
This is the symbol for the element potassium.
a)
K
b)
P
c)
Po
d)
Ka
33.
What is the atomic number of the element with the symbol Uut?
a)
Impossible the tell
b)
113
c)
103
d)
93
34.
What is the atomic mass of H?
a)
1
b)
2
35.
S stands for what element?
a)
Silicon
b)
Tin
c)
Sulfur
d)
Antimony
36.
What is the chemical symbol for mercury?
a)
Hg
b)
Mc
c)
My
d)
C
37.
What is the atomic number for nitrogen?
a)
7
b)
14
c)
15
38.
What is the chemical symbol for Silver?
a)
Ag
b)
Hg
c)
Si
d)
Au
39.
Fe is what element?
a)
Iron
b)
Lead
c)
Phosphorus
40.
What is the symbol for helium?
a)
He
b)
H
c)
Hl
d)
Hn
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