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Quiz by Jhoanne Morelos

Grade 9
Philippines Curriculum: Grades K-10 (MELC)

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Grade 9
Philippines Curriculum: Grades K-10 (MELC)

S9ES -IIIb-28

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40 questions
Show answers
  • Q1

    The spin quantum number of an electron can be thought of as describing _______

     the number of revolutions the electron makes about the nucleus per second

     whether the electron's charge is positive or negative.

    the direction of electron spin.

    the electron's exact location in orbit.

    S9ES -IIIb-28
  • Q2

    How many electrons from the outermost shell does a 4s orbital possess?





  • Q3

    Which set of quantum numbers uniquely defines one of the electrons in an atomic orbital with n = 2 and l = 0?

     n = 2, l = 0, ml = 0, ms = +1 

     n = 2, l = 0, ml = 1, ms = +½

     n = 2, l = 0, ml = 0, ms = +½

    n = 2, l = 0, ml = 1, ms = +1

  • Q4

     What is the electron configuration for nitrogen, atomic number 7? 

     1s 22s2 2p3

    1s2 2s2 2p1

    1s2 2s3 2p2

     1s2 2s2 2p2 3s1

  • Q5

    Which of these d-orbitals contains both paired and unpaired electrons?

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  • Q6

    How many valence electrons does Boron have?





  • Q7

    Covalent and ionic bonding produce certain types of compounds that have different properties. What is the general term used for all the compounds with covalent bond?




     None of These

  • Q8

    Non-polar covalent bonding involves the equal sharing of electrons between atoms to attain stability. Which of the following compounds will have non-polar covalent bonding?





  • Q9

    Electrical and thermal conductivity is one of the properties of compounds. Which of the following types of bonds will have a high electrical conductivity?

     ionic bond

    covalent bond

    polar covalent bond

    non-polar covalent bond

  • Q10

    The following compounds are commonly found in nature or in our household. Which do you think will have the highest melting/boiling point if we are to subject those substances to heating?

    none of the choices

    transferred to non-metal

     sodium chloride (NaCl)

    shared to a non-metal

  • Q11

    What happens to the electron of a metal element in ionic bonding forming a compound?

     transferred to non-metal

     shared to a non-metal

     shared unequally with non-metal

     none of the choices

  • Q12

    Which best describes the position of the elements in the Periodic Table and its valence electrons?

    Noble Gases elements have seven valence electrons

      All metalloids have the same valence electrons

     Elements on the same period have the same valence electrons

     Elements on the same family have the same valence electrons

  • Q13

    Which best describes an anion?

    It has more electrons than protons.

    It has a neutral charge.

     It has more neutrons than protons.

    It has more protons than electrons.

  • Q14

    How many electrons does Fluorine ion need for it to be stable?





  • Q15

    What ion can be combined with oxygen ions to form an ionic compound?

      Calcium ion

     Chlorine ion

     Fluorine ion

     Carbon ion


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