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WorksheetsChemistry Final Review
Total questions: 160
Worksheet time: 3hrs 14mins
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
Radio waves
Ultraviolet Rays
Gamma Rays
X-rays
Which has the LONGEST wavelength and, therefore, the lowest frequency/energy
Gamma Rays
Radio Waves
Visible Light
Infrared rays
How much of the electromagnetic spectrum is visible?
All of it
None of it
Most of it
Only a small part
Which section of the spectrum is the ONLY one we can see?
X-rays
Visible Light
Gamma Rays
Ultraviolet Rays
As the frequency of an electromagnetic wave increases, the amount of energy in that wave...
increases.
decreases.
stays the same.
How are electromagnetic waves different from other waves?
They have very short wavelengths
They transmit energy instead of matter
They can travel through empty space
They can change direction by reflection
Which EM waves are have the highest energy & are the most dangerous?
radio
gamma rays
infrared
x-rays
Which type of electromagnetic wave travels fastest through a vacuum?
radio
gamma rays
visible light
They all travel at the same speed.
Explain the structure of the atom
There is a tiny nucleus and a large electron cloud filled with empty space
There is a tiny nucleus and a tiny electron cloud
The nucleus is bigger than the electron cloud
The electron cloud is made of protons and electrons, the nucleus has neutrons
1s2 2s2 2p6 3s2
1s22s22p63s23p64s23d10
What is an orbital?
An orbital is a region in an atom where there is a high probability of finding electrons.
An orbital is the path that planets follow around the sun.
An orbital is a type of chemical bond between atoms.
An orbital is a fixed position in space where electrons are always found.
What is the electron cloud?
A region around the nucleus of an atom where electrons are likely to be found
A type of cloud found in the Earth's atmosphere
A cloud made up of protons and neutrons
A cloud that forms during a chemical reaction
How many electrons can the f orbital hold?
12
10
14
8
How many electrons can the 1st shell hold in total?
1
2
3
4
What is the most stable arrangement of electrons in an atom's electron cloud called?
Electron configuration
Quantum mechanical model
Bohr Model
Shorthand notation
Electrons act like _______ in addition to particles.
waves
particles
atoms
molecules
What is the Aufbau principle in electron configurations?
Electrons fill the highest energy orbital first.
Electrons fill the lowest energy orbital first.
Electrons fill orbitals randomly.
Electrons fill orbitals based on atomic number.
According to Hund’s rule, orbitals of equal energy each get ___ electron(s) before any orbital gets a second pair.
1
2
3
0
What does the Pauli exclusion principle state about electrons in the same atom?
They can have the same set of quantum numbers.
No two electrons can have the same set of quantum numbers therefore must have opposite spins
Electrons must have the same spin.
Electrons must occupy different orbitals.
Which element has the highest electronegativity?
Based on their locations in the periodic table, which element has chemical properties most similar to those of calcium, Ca?
beryllium, Be
potassium, K
titanium, Ti
yttrium, Y
What BEST DESCRIBES the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons?
Polarity
Affinity
Ionization
Discharge
What BEST DESCRIBES a positively charged ion?
Proton
Atom
Anion
Cation
What BEST DESCRIBES an arrangement of elements in a particular form, figure, or combination?
Illusion
Crystal lattice
Configuration
Stability
Valence electrons are easier to remove when there are more inner shell electrons to weaken the attraction of the nucleus. This is called....
Valence Electron Protection
Electron Shielding
Ionization Energy
Electron Affinity
Using the following table as a guide, which set of elements are organized from the lowest ionization energy to the highest?
H, Na, Rb, Cs
Cs, Rb, Na, H
F, C, Be, Li
O, S, Te, Po
The distance between the center of the nucleus to the outer boundary of the highest energy level electron cloud is defined as...
Atomic Radius
Atomic Mass
Atomic Number
Electronegativity
What best describes electronegativity?
The shielding of valence electrons from the nucleus by inner shell electrons
The amount of energy needed to remove an electron from an atom.
The amount of energy released when an electron is added to an atom.
A chemical property of an atom to attract electrons while bonded in a compound.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
Decreases, increases
Increases, increases
Increases, decreases
Stays the same, increases
Which element has the highest electronegativity?
Mg
Al
Si
P
Ionization energy __________ from left to right within a period and __________ from top to bottom within a group.
Decreases, increases
Increases, increases
Increases, decreases
Stays the same, increases
Which element has the lowest electronegativity?
Strontium
Calcium
Magnesium
Beryllium
1s2 2s2 2p6 3s2
3s2 3p2
Each row on the periodic table represents:
an energy level
a sublevel
an electron
an orbital
Which of the following is not a sublevel
s
p
n
f
d
Typically, atoms are more stable when they are
bonded together
apart from each other
A single covalent bond involves the sharing of
only one electron.
two electrons.
three electrons.
a variable number of electrons, which depends on the bonding atoms.
The measure of an atom’s ability to attract electrons is its
electronegativity
polarization.
ionization
electron affinity
Atoms that are bonded with an electronegativity difference of 0 to 0.3 are generally considered to be
negatively charged compounds.
nonpolar-covalent compounds.
polar-covalent compounds.
ionic compounds.
When an atom completely gives up its valence electrons to another atom, they form a bond that is considered to be
purely ionic.
partially ionic.
polar-covalent.
nonpolar-covalent.
You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the
distance between the atoms’ nuclei.
difference in the atoms’ electronegativities.
atoms’ atomic radii.
number of atoms in the compound.
An ionic bond results from the electrical attraction between
a cation and an anion
two anions
two cations
three or more cations and neutral molecules
What is transferred in an ionic bond?
proton
electron
neutron
energy level
Covalent bonds result from two or more atoms
combining their nucleii
combining their inner electron shells
transfer all valence electrons
sharing valence electrons to achieve an octet
The EN of Fluorine is 4.0; the EN of Cesium is 0.7; what is the EN difference?
3.3
4.7
there is no difference
0.33
Usually a _________ bond forms between metals and non metals.
covalent
coordinate covalent
metallic
ionic
Usually a ___________ bond forms between two or more nonmetals.
covalent
ionic
coordinate covalent
metallic
The type of bonding one would expect to occur between atoms in a 14K gold ring would be
ionic
covalent
metallic
coordinate coordinate bond
Which term best matches the following definition?
Definition: the tendency of an atom to prefer to have a full valence shell.
Octet Rule
Valence Shell
Molecule
Compound
Chemical Bond
Which type of bonding does the image best represent?
Ionic
Covalent
Metallic
Which type of bonding does the image best represent?
Ionic
Covalent
Metallic
Which type of bonding does the gif best represent?
Ionic
Covalent
Metallic
What type of bonding is present in an Iron nail (made of Fe atoms)?
Metallic
Covalent
Ionic
What type of bonding is present in an silver ring nail (made of Ag atoms)?
Metallic
Covalent
Ionic
What type of bonding in carbon dioxide (made of molecules containing CO2)?
Metallic
Covalent
Ionic
What type of bonding in ozone (made of molecules containing O3)?
Metallic
Covalent
Ionic
What type of bonding in sodium fluoride (made of the compound containing NaF)?
Metallic
Covalent
Ionic
What type of bonding in magnesium cloride (made of the compound containing MgCl2)?
Metallic
Covalent
Ionic
Is the following molecule polar or nonpolar?
polar
nonpolar
Is the following molecule polar or nonpolar?
polar
nonpolar
Which bond involves an unequal sharing of electrons?
Ionic bond
Nonpolar covalent bond
Polar covalent bond
Metallic bond
True or False: The smaller the difference in electronegativity, the more polar the bond
True
False
What is the charge on the nitrogen in: NaN3
1+
1-
3+
3-
None of these.
Name the following compound: Zn3N2
zinc nitride
trizinc dinitride
zinc (III) nitride
zinc (II) nitide
zinc nitrogen
Be F
Ca NO2
(NH4)3PO4
What is the correct formula for the compound calcium carbide?
CaC
Ca2C
CaC2
Ca2C4
Name the following compound: AlCl3
aluminum chlorine
aluminum trichloride
aluminum chloride
aluminum (III) chloride
None of these.
Name the following compound: Na2S
sodium sulfide
disodium sulfide
sodium sulfur
sodium monosulfide
None of these.
Name the following compound: CuCl2
copper chlorine
copper (I) chloride
copper (II) chloride
copper dichloride
None of these.
What is the formula for: magnesium sulfide
MgS
Mg2S2
MnS
MgS2
None of these.
What is the formula for: silver oxide
AgO2
AgO
Ag2O
SiO2
None of these.
What is the formula for: aluminum phosphide
AlP
AlP3
Al3P3
Al3P2
None of these.
What is the formula for: potassium fluoride
KF
KFl
K2F2
K2F
None of these.
What is the formula for: tin (II) bromide
SnBr2
SnBr
Sn2Br
TiBr2
None of these.
In a chemical reaction, no new atoms are created, and no atoms are destroyed.
__K + __Br2 --> __KBr
__HNO2 + __O2 --> __HNO3
How many Carbons are present on the reactant side?
1
2
3
4
How many Hydrogens are on the product side of this chemical equation?
1
2
3
4
Is this chemical equation balanced? Why or why not? Choose the BEST answer.
Yes, the amount of atoms for each element are equal on both the reactant and product side.
No, the carbons are not the same number on both the reactant and product side.
No, neither the carbons or hydrogens are the same amount on both the reactant and product side.
No, none of the elements (carbon, hydrogen, or oxygen) are the same amount on both the reactant and product side.
Fe + O2 -> Fe2O3
Al2O3 --> Al + O2
3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2
Synthesis (or combination)
Decomposition
Single replacement
Double replacement
Combustion reactions will always involve
Oxygen and a solid
Liquid nitrogen and heat
Oxygen and heat/energy
CO and H2O
Which type of chemical reaction has the following configuration?
Hydrocarbon + Oxygen --> Carbon Dioxide + Water
CxHy + O2 --> CO2 + H2O
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
What type of chemical reaction has the following configuration?
Compound --> Substance + Substance
AB --> A + B
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
Select each compound that can be produced by combustion reactions. (more than 1 answer)
Oxygen
Carbon Dioxide
Water
Glucose
Carbon
Classify the following chemical reaction
BaCl2(aq) + K2CrO4(aq) --> BaCrO4(s) + 2KCl(aq)
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
Classify the following chemical reaction.
Si(s) + 2Cl2(g) --> SiCl4(l)
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
Classify the follow chemical reaction.
2C6H6(l) + 15O2 --> 6H2O(l) + 12CO2(g)
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
What type of chemical reaction is when a single compound is broken down into two or more products?
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
Identify the type of chemical reaction picture above
Composition/Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
How many moles are in 19.82 g Mg?
Mg= 24.31g
481.82 mol Mg
1.00mol Mg
0.815 mol Mg
Determine the molar mass for carbon tetrachoride (CCl4)
C= 12.01g
Cl=35.45g
153.81 g/mol
141.8 g/mol
189.35 g/mol
47.46 g/mol
What is the mass in grams of 2.3456 moles of W?
W= 183.84
431.22 grams
6.02 grams
207.2 grams
486.01 grams
How many moles are in 1459 grams of Na?
Na= 22.99g
63.46 moles
60.36 moles
10 moles
1 mole
What is the molar mass of Aluminum Sulfide?
Al= 26.98
S=32.07
150.17 g/mol
59.05 g/mol
138.23 g/mol
75.27 g/mol
How many grams are in 0.523 mol of AlPO4?
63.78 g
38.68 g
47.23 g
55.43 g
How many moles are in 100 g of carbon dioxide, CO2?
2.27 mol
2.36 mol
3.51 mol
1.49 mol
Find the molar mass for NaOH
The following is the Atomic Mass from the Period Table
Na= 22.99g
O=16g
H=1.01g
40 g
40 moles
17 g
17 moles
When looking for Molar mass, where do you look for the Atomic Mass?
Periodic Table
Guess
6.02 X 1023
The Mole
