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WorksheetsChemistry Final Exam Review 2021
Total questions: 25
Worksheet time: 50mins
How mant kilojoules are equivalent to 60 joules?
0.006 kJ
0.06 kJ
6,000 kJ
60,000 kJ
A student measures the mass and volume of a sample of aluminum at room temperature, and calculates the density of Al to be 2.85 grams per cubic centimeter. Based on Table S, what is the percent error for the student's calculated density of Al?
2.7%
5.3%
5.6%
95%
A cube of iron at 20.°C is placed in contact with a cube of copper at 60.°C. Which statement describes the initial flow of heat between the cubes?
Heat flows from the copper cube to the iron cube.
Heat flows from the iron cube to the copper cube.
Heat flows in both directions between the cubes.
Heat does not flow between the cubes.
The average kinetic energy of the particles in a sample of matter is expressed as
density
volume
pressure
temperature
Which set of values represents standard pressure and standard temperature?
1 atm and 101.3 K
1 kPa and 273 K
101.3 kPa and 0°C
101.3 atm and 273°C
What is the total amount of heat required to vaporize 1.00 gram of at 100.°C and 1 atmosphere?
4.18 J
334 J
373 J
2260 J
At which temperature and pressure will a sample of neon gas behave most like an ideal gas?
300. K and 2.0 atm
300. K and 4.0 atm
500. K and 2.0 atm
500. K and 4.0 atm
Given the reaction...
Which type of emanation is represented by X?
alpha particle
beta particle
proton
positron
Which radioisotope has the fastest rate of decay?
Carbon-14
Calcium-37
Iron-53
Potassium-42
The three nuclides, U-233, U-235, and U-238, are isotopes of uranium because they have the same number of protons per atom and
the same number of electrons per atom
the same number of neutrons per atom
a different number of electrons per atom
a different number of neutrons per atom
The bright-line spectra of four elements, G, J, L, and M, and a mixture of at least two of these elements is given above.
Which elements are present in the mixture?
G and J
G and L
M, J, and G
M, J, and L
What is the total number of valence electrons in an atom of germanium in the ground state?
8
2
14
4
Which list of elements consists of a metal, a metalloid, and a nonmetal?
Li, Na, Rb
Cr, Mo, W
Sn, Si, C
O, S, Te
Which term represents the strength of the attraction an atom has for the electrons in a chemical bond?
electrical conductivity
electronegativity
first ionization energy
specific heat capacity
Which element forms an ionic compound when it reacts with lithium?
K
Fe
Kr
Br
Which phrase describes the molecular polarity and distribution of charge in a molecule of carbon dioxide, CO2?
polar and symmetrical
polar and asymmetrical
nonpolar and symmetrical
nonpolar and asymmetrical
Which quantity is equivalent to 39 grams of LiF?
1.0 moles
2.0 moles
0.50 moles
1.5 moles
Which intermolecular force of attraction accounts for the relatively high boiling point of water?
hydrogen bonding
covalent bonding
metallic bonding
ionic bonding
Given the equation representing a reaction...
Which type of chemical reaction is represented by the equation?
synthesis
decomposition
single replacement
double replacement
Given the equation representing a reaction...
What is the number of moles of C that must completely react to produce 2.0 moles of C2H6?
1.0 mol
2.0 mol
3.0 mol
4.0 mol
As the temperature of a reaction increases, it is expected that the reacting particles collide
more often and with greater force
more often and with less force
less often and with greater force
less often and with less force
In terms of disorder and energy, systems in nature have a tendency to undergo changes toward
less disorder and lower energy
less disorder and higher energy
greater disorder and lower energy
greater disorder and higher energy
Based on Table I, which compound dissolves in water by an exothermic process?
NaCl
NaOH
NH4Cl
NH4NO3
A solution that is at equilibrium must be
concentrated
dilute
saturated
unsaturated
What is the concentration of an aqueous solution that contains 1.5 moles of NaCl in 500 milliliters of this solution?
0.30 M
0.75 M
3.0 M
7.5 M
