WorksheetsQ3 Questions
Total questions: 45
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
2.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
3.
In the correct Lewis structure for CH4, how many unshared electron pairs surround the carbon?
a)
2
b)
8
c)
0
d)
4
4.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
5.
If electrons are shared unequally then the bond is....
a)
Non-polar covalent
b)
Ionic
c)
Non-polar ionic
d)
Polar covalent
6.
Metals and nonmetals form which kind of bond?
a)
Polar covalent
b)
Ionic
c)
Non-polar covalent
d)
Metallic
7.
How strongly an atom attracts electrons is called....................
a)
Ionization energy
b)
Electronegativity
c)
Electricity
d)
Nuclear force
8.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
9.
A covalent bond is
a)
a bond that shares electrons metallicaly
b)
A bond that shares electrons with non metals
c)
Metalloids bonding
d)
metals and nonmetals bonding
10.
What is the correct structure for BF3?
a)
Option A.
b)
Option B.
c)
Option C.
d)
Option D.
11.
How many valence electrons are in Phosphorus?
a)
15
b)
4
c)
5
d)
31
12.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Bent
d)
Linear
13.
Choose the correct shape for this molecule:
a)
linear
b)
Trigonal pyramidal
c)
Bent
d)
Tetrahedral
14.
Choose the correct shape for this molecule:
a)
Bent
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Trigonal planar
15.
Choose the correct shape for this molecule:
a)
Bent
b)
Linear
c)
Tetrahedral
d)
Trigonal pyramidal
16.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
17.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
18.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
19.
polar, nonpolar, or both:
"slight positive and slight negative charge"
"slight positive and slight negative charge"
a)
polar
b)
nonpolar
c)
both
20.
polar, nonpolar, or both:
"electronegativity values are the same"
"electronegativity values are the same"
a)
polar
b)
nonpolar
c)
both
21.
polar, nonpolar, or both:
"electonegativity values are different"
"electonegativity values are different"
a)
polar
b)
nonpolar
c)
both
22.
polar, nonpolar, or both:
"equal sharing of electrons"
"equal sharing of electrons"
a)
polar
b)
nonpolar
c)
both
23.
What is a cation's charge?
a)
positive
b)
negative
c)
neutral
d)
depends on the element
24.
What is an anion's charge?
a)
positive
b)
negative
c)
neutral
d)
depends on the element's charge
25.
Is potassium a cation or an anion?
a)
cation
b)
anion
26.
What is the charge of iron (III)?
a)
+3
b)
+2
c)
+6
d)
+4
27.
Identify the compound if hydrogen and chlorine are chemically combined.
a)
HCl
b)
HCl7
c)
H1Cl1
d)
H1Cl7
28.
When metals bond with non-metals they form what type of bonds
a)
covalent
b)
ionic
c)
cooperative
d)
lewis
29.
name the following ionic compound: NaF
a)
nitrogen fluorine
b)
sodium fluoride
c)
nitrogen fluoride
d)
sodium fluorine
30.
Name this compound:
KF
KF
a)
Potassium fluoride
b)
Potassium fluorite
c)
Fluorine potasside
d)
Potassium fluorate
31.
The chemical formula of carbon tetrachloride is
a)
CCl
b)
C₄Cl
c)
CCl₄
d)
C(IV)Cl
32.
How many Oxygen atoms are in H2O?
a)
1
b)
2
c)
0
d)
4
33.
Classify:
sulfur dioxide, SO2
sulfur dioxide, SO2
a)
ionic compound
b)
molecular compound
c)
metallic element
d)
non-metallic element
34.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
36.
Which elements are found on the right side of The Periodic Table?
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Water
36.
Which elements are found on the right side of The Periodic Table?
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Water
37.
The only common polyatomic ion having a positive charge is
a)
nitrate
b)
sulfate
c)
ammonium
d)
chromium
38.
Reactions between atoms involve only
a)
valence electrons
b)
inner electrons
c)
neutrons
d)
protons
39.
What type of formula attempts to show the arrangement of a three dimensional molecule in a two dimensional form?
a)
Molecular
b)
Structural
c)
Pythagorean
d)
Electron Dot
40.
Which structural formula below is ammonia?
a)
b)
c)
d)
41.
New substance formed in a chemical reaction is called
a)
catalysts
b)
intermediates
c)
products
d)
reactants
42.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
43.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
44.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
45.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
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