Bio II Ch. 2 Vocabulary
Matching
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2.1 a. | atoms | i. | C, H, O, N, Ca, P,
S | b. | atomic weight | j. | isotopes | c. | octet rule | k. | 1S, 2S, 2PX, 2PY, 2PZ, 3S,
3 | d. | energy | l. | orbital | e. | atomic number | m. | elements | f. | matter | n. | electron | g. | proton | o. | K, L, M | h. | neutron |
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1.
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anything that takes up space and has mass
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2.
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a volume of space where a rapidly moving electron is statistically predicted to
be found
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3.
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the top 7 elements found in living things
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4.
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tiny particles that make up elements
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5.
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a subatomic particle found in the nucleus with no charge
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6.
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atoms with the same number of protons, but a different number of
neutrons
atoms with the same atomic number, but a different atomic weight
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7.
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an atom’s outer shell is stable with 8 electrons
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8.
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the first three energy levels or “shells”
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9.
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basic substances that compose all matter, living and nonliving
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10.
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the mass units of an atom’s protons and neutrons combined
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11.
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a subatomic particle surrounding the nucleus with a negative charge
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12.
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the ability to do work
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13.
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the names of orbitals
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14.
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the number of protons in an atom, changes with each element
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15.
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a subatomic particle found in the nucleus with a positive charge
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2.2 a. | polar covalent bond | f. | oxidation | b. | molecule | g. | compound | c. | covalent bond | h. | ionic bond | d. | ions | i. | reduction | e. | hydrogen bond |
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16.
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smallest part of a compound that still has the properties of the
compound
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17.
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H atoms in one molecule are attracted to an O or N atom in another
molecule
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18.
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compounds held together by the attraction of charged ions
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19.
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forms when atoms of 2 or more different elements react or bond together
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20.
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results when 2 atoms share electrons to get an octet of electrons in the outer
shell
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21.
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unequal sharing of electrons in a covalent bond
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22.
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refers to the loss of electrons, more positive
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23.
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refers to the gain of electrons, more negative
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24.
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charged particles
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2.3 a. | hydrophilic | i. | neutral | b. | hydrophobic | j. | liquid water is slow to change temperature | c. | hydrogen
ions | k. | water has a high heat
vaporization | d. | hydroxide ions | l. | water is a universal solvent | e. | acids | m. | water molecules are
cohesive | f. | bases | n. | water
molecules are adhesive | g. | pH scale | o. | water has a high surface
tension | h. | buffers | p. | frozen water is less dense than liquid water |
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25.
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7 on the pH scale
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26.
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molecules that can attract water
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27.
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water molecules are attracted to other substances due to polarity
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28.
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protects organisms from rapid temperature changes
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29.
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molecules that dissociate in water and release H+
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30.
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molecules that can not attract water
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31.
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hard to break the surface of a liquid; can skip rocks, leaves float
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32.
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helps moderate the earth’s temperature; gives animals a way to release
heat
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33.
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OH-
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34.
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help keep the pH within normal limits
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35.
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molecules that either take up H+ or release OH-
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36.
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H+
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37.
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water molecules stick to other water molecules due to polarity
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38.
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water molecules spread out when they freeze
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39.
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the polarity of the water molecule pulls on the polarity of other
molecules
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40.
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used to indicate the acidity and basicity (alkalinity) of a solution
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