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Match the parts of an atom with its description a. | Nucleus | b. | Neutron | c. | Proton | d. | Electron |
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1.
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particle with a negative electrical charge
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2.
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particle with no electrical charge
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3.
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dense center of an atom
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4.
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particle with positive electrical charge
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5.
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Answer to #5 ____________________________
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6.
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Answer to #6 ____________________________
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7.
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An atom becomes an ion when its number of protons changes
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8.
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Some ions are positively charged, and some ions have no
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9.
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The formation of an ion results in a full outermost energy level.
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10.
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Ions usually form when electrons are transferred from one atom to
another.
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11.
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Choose one of the italicized words: Shared pairs of electrons fill the
innermost / outermost energy levels of bonded atoms
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12.
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Choose one of the italicized words: Covalent bonds are generally very
strong / weak.
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13.
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Choose one of the italicized words: Two atoms may form several covalent bonds to
share several pairs of protons / electrons.
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14.
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Choose one of the italicized words: A molecule is held together by
ionic / covalent bonds.
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15.
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A substance made of atoms of different elements bonded together in a certain
ratio
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16.
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A particular type of atom
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17.
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A bond formed by the electrical force between two ions of opposite charge (2
words)
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18.
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A bond formed when two atoms share a pair of electrons (2 words)
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19.
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The smallest basic unit of matter
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20.
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Two or more atoms held together by covalent bonds
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21.
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What distinguishes one element from another?
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22.
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Describe the formation of an ionic compound.
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23.
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What is the difference between an ionic bond and a covalent bond?
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24.
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Compare and Contrast. How does a molecule differ from an atom?
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25.
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Apply. Explain why a hydrogen atom can become either an ion or a part of
a molecule.
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26.
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Connect to Chemistry:
A sodium atom has one outer electron, and a carbon atom
has four outer electrons. How might this difference be related to the types of compounds formed by
atoms of these two elements?
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27.
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Which phrase best describes atoms?
a. | single celled organisms | c. | parts of a
nucleus | b. | smallest basic units of matter | d. | positively charged
particles |
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28.
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Which of the following cannot be broken down by ordinary chemical means?
a. | element | c. | molecule | b. | compound | d. | bond |
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29.
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What is a compound?
a. | two atoms of a single element bonded together | b. | atoms of different
elements bonded together in certain ratios | c. | separate atoms of multiple elements in varying
ratios | d. | a molecule of two oxygen atoms |
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30.
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An ion is formed when an atom gains or loses
a. | protons | c. | bonds | b. | neutrons | d. | electrons |
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31.
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Atoms connected by covalent bonds share
a. | pairs of electrons | c. | carbon and oxygen | b. | ionic compounds | d. | hydrogen ions |
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