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WorksheetsReview for Fall Final Exam Chem I
Total questions: 93
Worksheet time: 47mins
Define the term 'element'.
found on the Periodic Table, made up of approximately 118.
a compound consisting of two or more different atoms.
a mixture of various substances that can be separated.
a type of molecule that contains only one type of atom.
Define the term 'compound'.
made up of two or more elements.
a single element in its pure form.
a mixture of different substances.
a type of chemical reaction.
Define the term 'mixture'.
two or more pure substances mixed in any ratio.
a single pure substance with a fixed composition.
a chemical compound formed by a chemical reaction.
a solution with a uniform composition throughout.
Define the term 'heterogeneous mixture'.
a mixture where the components can be physically seen.
a mixture where the components are uniformly distributed.
a mixture that consists of only one type of molecule.
a mixture that cannot be separated by physical means.
Define the term 'homogeneous mixture'.
parts of the mixture cannot be seen or “picked out”.
it consists of different substances that remain physically separate.
it is a mixture where the components can be easily distinguished.
it is a mixture that has a variable composition.
Define the term 'accuracy'.
how close a measurement is to the true or accepted value.
the ability to repeat a measurement with the same result.
the range within which a measurement is considered valid.
the speed at which a measurement can be obtained.
Define the term 'precision'.
how close multiple measurements are to each other.
the degree to which a measurement agrees with the true value.
the ability to measure small differences in a quantity.
the consistency of a measurement over repeated trials.
Define the term 'matter'.
anything that has mass or takes up space.
a form of energy that can be transferred between objects.
a type of force that acts at a distance.
a concept used to describe the flow of time.
Define the term 'chemistry'.
the study of matter and the changes it undergoes.
the study of celestial bodies and the universe.
the study of living organisms and life processes.
the study of past human activities through artifacts.
Define the term 'physical property'.
a property observed without changing chemical composition.
a property that involves a chemical reaction.
a property that is only theoretical and cannot be measured.
a property that changes the substance into a new one.
Define the term 'chemical property'.
a property that in order to be observed, changes chemical composition.
a property that can be observed without changing the substance's chemical identity.
a property that is related to the physical state of a substance.
a property that describes the color and texture of a substance.
Define the term 'physical change'.
a change that results in no change in composition.
a change that results in a new substance being formed.
a change that involves a chemical reaction.
a change that alters the atomic structure of a substance.
Define the term 'chemical change'.
a change that results in a change in composition.
a change that can be easily reversed.
a change that does not involve energy.
a change that only affects physical properties.
Define the term 'mass'.
a measure of the amount of matter in an object.
a measure of the volume of an object.
a measure of the weight of an object.
a measure of the density of an object.
Define the term 'pure science'.
to understand our physical and natural world.
to develop new technologies.
to create new products for commercial use.
to solve specific practical problems.
Define the term 'applied science'.
practical application of scientific discoveries.
theoretical exploration of scientific concepts.
study of ancient scientific theories.
analysis of scientific data without practical use.
Define the term 'quantitative observations'.
observations involving numbers and units.
observations based on personal opinions.
observations that are purely theoretical.
observations that do not require measurement.
Define the term 'qualitative observations'.
observations involving your 5 senses, no numbers.
observations that include numerical data.
observations that require complex calculations.
observations that are based on theoretical models.
Define the term 'variable'.
factor in the experiment.
a constant value in mathematics.
a type of data structure.
a fixed point in time.
Define the term 'independent variable'.
factor that is being changed.
factor that is being measured.
factor that remains constant.
factor that is dependent on other variables.
Define the term 'dependent variable'.
factor that is being measured or observed.
factor that is manipulated or changed.
factor that remains constant.
factor that is irrelevant to the experiment.
What is the scientific method? List the steps involved and explain each one thoroughly.
Observation, Hypothesis, Experiment, Analysis, Conclusion
Hypothesis, Experiment, Observation, Conclusion, Analysis
Experiment, Observation, Hypothesis, Conclusion, Analysis
Observation, Experiment, Hypothesis, Analysis, Conclusion
Which state of matter has a definite shape and volume, is rigid, and has high density?
Solid
Liquid
Gas
Identify each of the following as either a physical change (PC) or a chemical change (CC):
burning wood
CC
mixing acid and base
CC
melting ice
PC
boiling water
PC
mixing salt and sugar
PC
Explain the Law of Conservation of Matter: In any chemical or physical change, mass is always conserved. (Mass of the products=mass of the reactants)
Mass is lost during chemical reactions.
Mass is gained during physical changes.
Mass is always conserved in chemical or physical changes.
Mass of the reactants is different from the mass of the products.
Change the following numbers into scientific notation: a) 0.000045030
4.503x10^-5
4.503x10^-4
Change the following numbers into scientific notation: b) 120,000,000.
1.2x10^8
1.2x10^7
Change the following numbers out of scientific notation: a) 5.11 x 10^3.
5110
0.511
51100
51.1
Change the following numbers out of scientific notation: b) 4.2 x10^-6.
0.0000042
0.000042
0.00000042
0.00042
Be able to read a graph and determine the location of independent and dependent variables. Independent variable goes on the x axis (bottom or horizontal axis). Dependent variable goes on the y axis (left side or vertical axis).
Independent variable goes on the y axis and dependent variable goes on the x axis.
Independent variable goes on the x axis and dependent variable goes on the y axis.
Both independent and dependent variables go on the x axis.
Both independent and dependent variables go on the y axis.
How many cm are equal to 14.6 m?
1460 cm
1450 cm
1400 cm
1500 cm
How many kilograms are equal to 1.5 x 10^3 mg?
1.5x10^-3 kg
1.5x10^-2 kg
1.5x10^-4 kg
1.5x10^-5 kg
How many miles are equal to 1.7 km? (1 inch = 2.54 cm)
1.1 miles
0.5 miles
0.8 miles
1.0 miles
How many seconds are in the month of June? (30 days)
2,592,000 seconds
3,000,000 seconds
2,678,400 seconds
2,500,000 seconds
What is this density in lb/ML? (1 oz = 28.34 g)
59,500 lbs/ML
60,000 lbs/ML
58,000 lbs/ML
57,500 lbs/ML
Complete and know the following for the metric prefixes: Prefix: Mega-, Symbol: M, Meaning: 1,000,000
Prefix: Mega-, Symbol: M, Meaning: 1,000,000
Prefix: Kilo-, Symbol: k, Meaning: 1,000
Prefix: Giga-, Symbol: G, Meaning: 1,000,000,000
Prefix: Micro-, Symbol: μ, Meaning: 0.000001
Complete and know the following for the metric prefixes: Prefix: Kilo-, Symbol: k, Meaning: 1,000
Prefix: Kilo-, Symbol: k, Meaning: 1,000
Prefix: Mega-, Symbol: M, Meaning: 1,000,000
Prefix: Giga-, Symbol: G, Meaning: 1,000,000,000
Prefix: Milli-, Symbol: m, Meaning: 0.001
Complete and know the following for the metric prefixes: Prefix: Deci-, Symbol: d, Meaning: 0.10
Prefix: Deci-, Symbol: d, Meaning: 0.10
Prefix: Centi-, Symbol: c, Meaning: 0.01
Prefix: Milli-, Symbol: m, Meaning: 0.001
Prefix: Micro-, Symbol: μ, Meaning: 0.000001
What is the value of the prefix 'Centi-'?
The prefix 'Centi-' represents a factor of one hundredth (1/100) or 0.01.
The prefix 'Centi-' represents a factor of ten (10) or 10.
The prefix 'Centi-' represents a factor of one thousandth (1/1000) or 0.001.
The prefix 'Centi-' represents a factor of one tenth (1/10) or 0.1.
What is the value of the prefix 'Milli-'?
The prefix 'Milli-' represents a factor of one thousandth (1/1000) in the metric system.
The prefix 'Milli-' represents a factor of one hundredth (1/100) in the metric system.
The prefix 'Milli-' represents a factor of one tenth (1/10) in the metric system.
The prefix 'Milli-' represents a factor of one millionth (1/1,000,000) in the metric system.
What is the value of the prefix 'Micro-'?
The prefix 'Micro-' typically denotes a factor of one millionth (10^-6) or a very small scale.
The prefix 'Micro-' typically denotes a factor of one thousandth (10^-3).
The prefix 'Micro-' typically denotes a factor of one hundredth (10^-2).
The prefix 'Micro-' typically denotes a factor of one tenth (10^-1).
What is the density of a marble that has a mass of 56 grams and displaces water in a graduated cylinder from 30 mL to 39 mL?
6.22 g/mL
5.60 g/mL
7.00 g/mL
8.00 g/mL
What is the mass of an object that has a density of 6 g/cc and measures 1 cm × 1.4 cm × 1.78 cm?
10.0 g
12.0 g
15.0 g
18.0 g
How much will a pebble displace water in a graduated cylinder if it has a mass of 4.6 grams and a density of 2 g/cc?
2.3 cc
4.6 cc
9.2 cc
1.15 cc
A student determines the density of water to be .9 g/mL. The chemistry textbook states that the density of water is 1.0 g/mL. What is the percent error?
10%
5%
1%
0.1%
What is the percent error if my friend timed the mile run to be 4.2 minutes and the official at the race timed my run to be 3.9 minutes?
7.14%
6.67%
8.33%
5.00%
Which of the following correctly describes the differences between the 3 subatomic particles: Proton, Electron, Neutron in terms of Charge, Mass, and Place in atom?
Protons are positively charged, have a mass of approximately 1 amu, and are located in the nucleus; Electrons are negatively charged, have negligible mass, and orbit the nucleus; Neutrons have no charge, have a mass of approximately 1 amu, and are located in the nucleus.
Protons are negatively charged, have negligible mass, and orbit the nucleus; Electrons are positively charged, have a mass of approximately 1 amu, and are located in the nucleus; Neutrons have no charge, have a mass of approximately 1 amu, and are located in the nucleus.
Protons have no charge, have a mass of approximately 1 amu, and are located in the nucleus; Electrons are negatively charged, have a mass of approximately 1 amu, and orbit the nucleus; Neutrons are positively charged, have negligible mass, and are located in the nucleus.
Protons are positively charged, have negligible mass, and orbit the nucleus; Electrons have no charge, have a mass of approximately 1 amu, and are located in the nucleus; Neutrons are negatively charged, have a mass of approximately 1 amu, and are located in the nucleus.
Define the term: atomic number.
Number of protons in an atom’s nucleus.
Number of neutrons in an atom’s nucleus.
Total number of electrons in an atom.
Sum of protons and neutrons in an atom.
Define the term: mass number.
Protons + neutrons.
Protons only.
Neutrons only.
Electrons + protons.
Define the term: isotope.
Atoms with the same number of protons, different numbers of neutrons.
Atoms with the same number of neutrons, different numbers of protons.
Atoms with the same number of electrons, different numbers of protons.
Atoms with the same number of protons and neutrons.
Define the term: atomic mass.
The weighted average of an atom’s isotopes.
The number of protons in an atom.
The total number of protons and neutrons in an atom.
The number of electrons in an atom.
Define the term: cation.
Metals lose one or more electrons to have an overall positive charge.
Metals gain one or more electrons to have an overall negative charge.
Non-metals lose one or more electrons to have an overall positive charge.
Non-metals gain one or more electrons to have an overall negative charge.
Define the term: anion.
Nonmetals gain one or more electrons to have an overall negative charge.
Metals lose one or more electrons to have an overall positive charge.
A neutral atom with no net charge.
An atom that has lost protons to become negatively charged.
Fill in the following chart: Symbol: 16/8 O^-2, Atomic #: 8, Mass #: 16, # of protons: 8, # of neutrons: 8, # of electrons: 10.
Symbol: 16/8 O^-2, Atomic #: 8, Mass #: 16, # of protons: 8, # of neutrons: 8, # of electrons: 10.
Symbol: 16/8 O^-2, Atomic #: 8, Mass #: 16, # of protons: 8, # of neutrons: 8, # of electrons: 8.
Symbol: 16/8 O^-2, Atomic #: 8, Mass #: 16, # of protons: 8, # of neutrons: 10, # of electrons: 8.
Symbol: 16/8 O^-2, Atomic #: 8, Mass #: 16, # of protons: 10, # of neutrons: 8, # of electrons: 8.
Fill in the following chart: Symbol: 108/47 Ag^+1, Atomic #: 47, Mass #: 108, # of protons: 47, # of neutrons: 61, # of electrons: 46.
Symbol: 108/47 Ag^+1, Atomic #: 47, Mass #: 108, # of protons: 47, # of neutrons: 61, # of electrons: 46.
Symbol: 108/47 Ag^+1, Atomic #: 47, Mass #: 108, # of protons: 47, # of neutrons: 60, # of electrons: 47.
Symbol: 108/47 Ag^+1, Atomic #: 47, Mass #: 108, # of protons: 46, # of neutrons: 61, # of electrons: 46.
Symbol: 108/47 Ag^+1, Atomic #: 47, Mass #: 108, # of protons: 47, # of neutrons: 62, # of electrons: 45.
Briefly describe the important experiment and/or contribution to the atom by Democritus: A philosopher, was the first person to “think” about an atom’s existence, did not have experimental proof however.
Democritus conducted experiments to prove the existence of atoms.
Democritus was the first to theorize about the existence of atoms without experimental proof.
Democritus discovered the electron.
Democritus developed the atomic theory with experimental evidence.
Briefly describe the important experiment and/or contribution to the atom by Dalton: Developed the first ever atomic theory. Unlike Democritus, did have experimental proof of an atom’s existence.
Dalton's atomic theory was the first to provide experimental proof of atoms.
Dalton discovered the electron.
Dalton proposed the plum pudding model.
Dalton developed the quantum mechanical model.
What important experiment and/or contribution to the atom was made by Thompson?
Discovered the electron through the cathode ray tube experiment and developed the Plum Pudding model of the atom.
Proposed the nuclear model of the atom.
Discovered the neutron.
Developed the quantum mechanical model of the atom.
What important discovery about the atom did Rutherford make through the Gold Foil Experiment?
Discovered the electron
Discovered the neutron
Discovered the nucleus and that the atom was mostly empty space
Discovered the proton
Which of the following is NOT one of the 4 points of Dalton's atomic theory?
Atoms are the smallest indivisible particles of matter.
Atoms of the same element are identical in mass and properties.
Compounds are formed by a combination of two or more different kinds of atoms.
Atoms can be created or destroyed in chemical reactions.
Calculate the atomic mass of Carbon if the two common isotopes of carbon have masses of 12.000 amu (98.89 % abundance) and 13.003 amu (1.11 % abundance).
12.011 amu
12.500 amu
13.000 amu
11.000 amu
Silver has an atomic mass of 107.868 amu. Silver has two common isotopes. One of the isotopes has a mass of 106.906 amu and a relative abundance of 51.881%. What is the % abundance of the other isotope?
48.119%
50.000%
51.881%
49.119%
Silver has an atomic mass of 107.868 amu. Silver has two common isotopes. One of the isotopes has a mass of 106.906 amu and a relative abundance of 51.881%. What is the mass of the other isotope?
108.905 amu
109.905 amu
110.905 amu
111.905 amu
What is the shape associated with the s sublevel?
Sphere
Dumbbell
Double Dumbbell
Complex
What is the shape associated with the p sublevel?
Spherical
Dumbbell
Double dumbbell
Complex
What is the shape associated with each of the following sublevels?
s "sphere"
p "dumbbell"
d "clover"
f "complex"
What is the shape associated with the f sublevel?
Spherical
Dumbbell
Double Clover
Clover
The maximum number of electrons that can be in an atomic orbital is ____________.
2
4
6
8
A p sublevel can hold up to ____________ electrons.
6
4
8
10
The 4th energy level can hold a maximum of ____________ electrons.
32
16
24
40
The 3rd energy level has _______________________.
3 sublevels: s, p, d
2 sublevels: s, p
4 sublevels: s, p, d, f
1 sublevel: s
The electrons always fill the sublevels of _________ energy first. This is referred to as the Aufbau method.
lowest
highest
random
medium
Within a sublevel, we should always fill 1 electron per orbital before 2 electrons go into the same orbital. This is called __________ rule.
Hund’s
Pauli’s
Aufbau’s
Bohr’s
The 4s sublevel has __________ energy than the 3d sublevel.
lower
higher
equal
more
A ______ sublevel can hold a maximum of 10 electrons.
d
s
p
f
If two atoms have the same electron configuration, they are said to be ______ with each other.
isoelectronic
isotopic
isomeric
isotonic
Atomic orbitals can hold only 2 electrons at most and they must have opposite spins. This is called the ______ Principle.
Pauli
Heisenberg
Bohr
Hund
Each sublevel is oriented differently in 3-D space. Atomic orbitals can hold only ______.
two electrons
three electrons
four electrons
one electron
What is the number of valence electrons in the neutral element Al with the electron configuration 1s²2s²2p⁶3s²3p¹?
1 ve
2 ve
3 ve
4 ve
What is the complete orbital notation for the neutral element P?
1s² 2s² 2p⁶ 3s² 3p³
1s² 2s² 2p⁶ 3s² 3p⁶
1s² 2s² 2p⁶ 3s² 3p²
1s² 2s² 2p⁶ 3s² 3p⁴
Use noble gas abbreviations to write the electron configurations for the following neutral elements: Na
a) Na: [Ne] 3s¹
b) Na: [Ar] 3s¹
c) Na: [He] 2s² 2p⁶ 3s¹
d) Na: [Kr] 4s² 3d¹⁰ 4p⁶ 5s²
Use noble gas abbreviations to write the electron configurations for the following neutral element: V.
[Ne] 3s² 3p⁶ 3d³
[Ar] 4s² 3d³
[Kr] 5s² 4d³
[Xe] 6s² 5d³
Use noble gas abbreviations to write the electron configurations for the following neutral elements: c) Yb:
[Xe] 6s² 4f¹⁴
[Xe] 6s² 4f¹³
[Xe] 6s¹ 4f¹⁴
[Xe] 6s² 5d¹
What is the complete electron configuration for the ion Mg²⁺?
1s²2s²2p⁶
1s²2s²2p⁶3s²
1s²2s²2p⁶3s¹
1s²2s²2p⁵
What is the complete electron configuration for the ion Cl⁻¹?
1s²2s²2p⁶3s²3p⁵
1s²2s²2p⁶3s²3p⁶
1s²2s²2p⁶3s²3p⁴
1s²2s²2p⁶3s²3p³
Identify the following elements/ions from their electron configurations: a) __________ 1s² 2s² 2p⁶ 3s² 3p⁴ for a neutral element
S
Cl
Ar
P
Identify the following elements/ions from their electron configurations: b) __________ 1s² 2s² 2p⁶ for an element with a -3 charge
N⁻³
O⁻²
F⁻
Ne
Identify the following elements/ions from their electron configurations: c) __________ [Kr] 4d⁸ 5s² for a neutral element
Pd
Ag
Rh
Cd
Identify the following elements/ions from their electron configurations: d) __________ [Kr]5s²4d¹⁰5p⁶ for an element with a +1 charge
Cs⁺¹
Rb⁺¹
Ba⁺²
Xe
Fill in the best answer for each of the following: a) A vertical column is called a ____ or ____ on the periodic table.
group or family
period
row
block
A horizontal column is called a ____ on the periodic table.
period
group
block
series
S²⁻ has the same electron configuration as the noble gas ____.
Argon (Ar)
Neon (Ne)
Krypton (Kr)
Xenon (Xe)
i) ______ is the only noble gas with 2 valence electrons.
Helium
Neon
Argon
Krypton
