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10 questions
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  • Q1

    which of the following are poor conductors of heat and electricity?

    metals

    nonmetals

    metalloids

    alkaline Earth Metals

    120s
    112.35.c.5.b
  • Q2

    which group on the periodic table is known s the alkaline earth metals?

    group 2A

    group 1A

    group 8A

    group 7A

    120s
    112.35.c.5.b
  • Q3

    Halogens are good disinfectants.  Which of the following is a halogen?

    Cl

    N

    O

    Fe

    120s
    112.35.c.5.b
  • Q4

    Why do atomic numbers jump by 15 from left to right in the section of the periodic table shown above?

    Question Image

    the missing elements have not yet been discovered

    the missing elements form the lanthanide and actinide series, usually found below the periodic table

    the missing elements do not exist

    the missing elements are all radioactive

    120s
    112.35.c.5.b
  • Q5

    which group on the periodic table is known s the alkaline earth metals?

    group 8A

    group 7A

    group 1A

    group 2A

    120s
    112.35.c.5.b
  • Q6

    looking only at the box above, what can you say for certain about the element immediately to the right of oxygen on the periodic table?

    Question Image

    the element's name will begin with the letter P

    the element will be a gas

    the element will have atomic number 9

    the element's atomic weight will be 18

    120s
    112.35.c.5.b
  • Q7

    Atoms of elements in group 15 have _______

    7 valence electrons

    1 valence electron

    5 valence electrons

    15 valence electrons

    120s
    112.35.c.5.b
  • Q8

    Group 17 elements are referred to as __________

    halogens

    noble gases

    alkaline earth metals

    alkali metals 

    120s
    112.35.c.5.b
  • Q9

    how many groups or families are on the periodic table? 

    18

    20

    8

    7

    120s
    112.35.c.5.b
  • Q10

    How many periods are on the periodic table 

    7

    17

    5

    18

    120s
    112.35.c.5.b

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