Matching
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Match each item with the correct statement below. a. | absolute zero | e. | mass | b. | Kelvin temperature scale | f. | significant figure | c. | Celsius temperature
scale | g. | precision | d. | weight | h. | accuracy |
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1.
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closeness to true value
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2.
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narrowness of range of measurements
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3.
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known or estimated in a measurement
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4.
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the quantity of matter an object contains
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5.
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the lowest point on the Kelvin scale
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6.
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the SI scale for temperature
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7.
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the force of gravity on an object
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8.
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the non-SI scale for temperature
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Match each item with the correct statement below. a. | proton | d. | electron | b. | nucleus | e. | neutron | c. | atom |
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9.
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the smallest particle of an element that retains the properties of that
element
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10.
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a positively charged subatomic particle
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11.
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a negatively charged subatomic particle
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12.
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a subatomic particle with no charge
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13.
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the central part of an atom, containing protons and neutrons
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Match each item with the correct statement below. a. | mass number | d. | atomic mass | b. | atomic mass unit | e. | isotope | c. | atomic
number |
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14.
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atoms with the same number of protons, but different numbers of neutrons in the
nucleus of an atom
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15.
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the total number of protons and neutrons in the nucleus of an atom
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16.
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the number of protons in the nucleus of an element
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17.
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the weighted average of the masses of the isotopes of an element
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18.
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one-twelfth the mass of a carbon atom having six protons and six
neutrons
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Match each item with the correct statement below. a. | atomic orbital | d. | ground state | b. | aufbau principle | e. | Pauli exclusion principle | c. | electron
configuration | f. | Heisenberg
uncertainty principle |
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19.
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region of high probability of finding an electron
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20.
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states the impossibility of knowing both velocity and position of a moving
particle at the same time
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21.
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lowest energy level
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22.
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tendency of electrons to enter orbitals of lowest energy first
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23.
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arrangement of electrons around atomic nucleus
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24.
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each orbital has at most two electrons
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Match each item with the correct statement below. a. | atomic emission spectrum | d. | photon | b. | frequency | e. | quantum | c. | wavelength | f. | spectrum |
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25.
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discrete bundle of electromagnetic energy
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26.
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energy needed to move an electron from one energy level to another
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27.
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number of wave cycles passing a point per unit of time
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28.
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distance between wave crests
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29.
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separation of light into different wavelengths
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30.
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frequencies of light emitted by an element
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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31.
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When a test instrument is calibrated, does its accuracy, precision, or
reliability improve?
a. | precision | c. | reliability | b. | accuracy | d. | all of the
above |
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32.
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Three different people weigh a standard mass of 2.00 g on the same balance. Each
person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance
that was used is ____.
a. | accurate | c. | accurate and precise | b. | precise | d. | neither accurate nor
precise |
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33.
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How many significant figures are in the measurement 0.003 4 kg?
a. | two | c. | five | b. | four | d. | This cannot be
determined. |
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34.
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The atomic number of an element is the total number of which particles in the
nucleus?
a. | neutrons | c. | electrons | b. | protons | d. | protons and
electrons |
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35.
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An element has an atomic number of 76. The number of protons and electrons in a
neutral atom of the element are ____.
a. | 152 protons and 76 electrons | c. | 38 protons and 38
electrons | b. | 76 protons and 0 electrons | d. | 76 protons and 76 electrons |
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36.
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The sum of the protons and neutrons in an atom equals the ____.
a. | atomic number | c. | atomic mass | b. | nucleus number | d. | mass number |
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37.
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Isotopes of the same element have different ____.
a. | positions on the periodic table | c. | atomic numbers | b. | chemical
behavior | d. | mass
numbers |
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38.
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The letter " p" in the symbol 4 p
indicates the ____. a. | spin of an electron | c. | principle energy level | b. | orbital
shape | d. | speed of an
electron |
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39.
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What is the next atomic orbital in the series 1s, 2s, 2p,
3s, 3p?
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40.
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According to the aufbau principle, ____.
a. | an orbital may be occupied by only two electrons | b. | electrons in the
same orbital must have opposite spins | c. | electrons enter orbitals of highest energy
first | d. | electrons enter orbitals of lowest energy first |
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