Completion
Complete each
statement.
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Unscramble the letters to form the correct word for each
definition.
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1.
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mannotel: usually a gas or brittle solid at room temperature
____________________
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2.
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sepretenveriat tenelmes: elements in Groups 1 and 2 and in Groups
13–18 ____________________
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3.
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rogup: contains elements with similar properties
____________________
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4.
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telam: an element that has luster and conducts heat and electricity
____________________
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5.
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dilatomel: shows properties of a metal and a nonmetal
____________________
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6.
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dopier: row of elements in the periodic table ____________________
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7.
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toccurenmoids: shows moderate electrical conductivity
____________________
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8.
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scytatal: substance that speeds up a chemical reaction, but is not
changed itself ____________________
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9.
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sitnnorati tenelmes: are all metals ____________________
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10.
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yetihscnt tenelmes: are made in laboratories ____________________
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Choose the best of the answers in parentheses.
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11.
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In this periodic table, Mendeleev arranged the elements in order of increasing
____________________ (atomic number, atomic diameter, mass number).
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12.
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The symbol for the element mercury is ____________________ (Mg, Hg, Ga).
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13.
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The element ____________________ (neon, sodium, bromine) is a gas at room
temperature.
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14.
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Most of the ____________________ (actinides, alkali metals, halogens) are
synthetic elements.
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15.
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____________________ (Sulfur, Magnesium, Copper) is a good conductor of
electricity and heat.
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16.
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Elements in Groups 1, 2, and 13 through 18 are called the
______________________________ (transition elements, rare earth elements, representative
elements).
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17.
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____________________ (Aluminum, Iron, Copper) has magnetic properties.
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18.
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Silicon is an example of a(n) ____________________ (semiconductor, transition
element, alloy).
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19.
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Elements that rarely combine with other elements are the ____________________
(halogens, noble gases, alkali metals).
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20.
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All transition elements are ____________________ (metals, gases,
liquids).
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21.
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Most nonmetals are ____________________ (good conductors, brittle,
gases).
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22.
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Elements that can be pounded into thin sheets are ____________________
(metalloids, semiconductors, malleable).
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23.
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The only nonmetal found on the left side of the periodic table is
____________________ (sodium, chlorine, hydrogen).
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24.
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The most active nonmetal is ____________________ (fluorine, iodine,
carbon).
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25.
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The element used for storing and transporting radioactive materials is
____________________ (tin, lead, carbon).
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26.
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The iron triad is made up of iron, cobalt, and ____________________ (aluminum,
nickel, tin).
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27.
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Most transition metals have ____________________ (higher, lower) melting points
than the representative elements.
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28.
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____________________ (Transition elements, Lanthanides, Actinides) are soft
metals.
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29.
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All of the ____________________ (transition elements, lanthanides, actinides)
are radioactive.
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30.
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Although ____________________ (silver, mercury, gold) is a poisonous liquid, it
can be used in dental materials if mixed with other metals.
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Matching
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Match each item with the correct statement below. a. | alkali metals | k. | metals | b. | alkaline earth metals | l. | metalloids | c. | ductile | m. | noble gases | d. | atomic number | n. | nonmetals | e. | actinides | o. | period | f. | group | p. | mass number | g. | halogens | q. | representative elements | h. | hydrogen | r. | semiconductors | i. | lanthanides | s. | transition elements | j. | malleable |
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31.
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elements that are gases or brittle solids and poor conductors of heat and
electricity
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32.
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basis for arranging elements in modern periodic table
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33.
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able to be hammered into thin sheets
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34.
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series of radioactive elements
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35.
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a row of elements in the periodic table whose properties change gradually and
predictability
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36.
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elements that show moderate electrical conductivity
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37.
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silvery solids with low densities and low melting points found in Group
1
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38.
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elements that show properties of both metals and nonmetals
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39.
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elements in Groups 3 through 12 of the periodic table
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40.
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only nonmetal in Group 1
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41.
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most chemically inactive group of elements
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42.
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another name for Group 2 elements
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43.
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group of elements that form salts
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44.
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most elements fall into this classification
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45.
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series of elements that are sometimes called the rare earths
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Classify the elements described below as a metal, nonmetal, or
metalloid. a. | metal | b. | nonmetal | c. | metalloid |
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46.
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a gas at room temperature
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47.
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a poor conductor of electricity
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48.
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can be used as a semiconductor
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49.
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can be hammered into thin sheets
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50.
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has a dull appearance and is brittle
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51.
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a transition element
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52.
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used for computer chips
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53.
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can be drawn out into a thin wire
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Modified True/False
Indicate
whether the statement is true or false. If false, change the identified word or phrase to make the
statement true.
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54.
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The nonmetals are not very important. _________________________
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55.
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Silicon and germanium are used in electronics as semiconductors.
_________________________
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56.
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The element silver is widely used in dentistry. _________________________
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57.
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All transition elements are metals. _________________________
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58.
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Most of the actinides occur naturally in Earth’s crust.
_________________________
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59.
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Lithium and sodium are members of the alkali metal family.
_________________________
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60.
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Bromine and mercury are liquids at room temperature.
_________________________
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61.
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A period contains elements that have similar properties.
_________________________
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62.
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Helium, argon, and radon are members of the halogen family.
_________________________
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63.
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The most active metals are found in the noble gas family.
_________________________
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Short Answer
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64.
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In an outline, the subtopics are alkali metals and halogens. What would the main
topic of the outline be?
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65.
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liquid at room temperature
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66.
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atomic nucleus has the fewest protons
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67.
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does not occur naturally on Earth
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68.
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has an average atomic mass of about 12
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69.
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atomic nucleus contains 11 protons
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Essay
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70.
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Explain why you would not expect to be able to combine magnesium and argon to
produce a useful substance.
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71.
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Would you expect the insulation around an electrical outlet to be made of a
metal, a nonmetal, or a metalloid? Explain your answer.
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72.
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After completing his table, why did Mendeleev suspect that there were elements
yet to be discovered?
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73.
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How does reading across a period of the periodic table compare with reading down
a group of the table?
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74.
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What are the two series of inner transition elements and what is a trait of
each?
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75.
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Describe characteristics of two representative element groups. Give examples of
how these elements are used.
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