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SECOND QUARTER TEST

Quiz by Jhoanne Morelos

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

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Measures 1 skill from
Grade 9
Science
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.

    30s
    S9ES -IIIb-28
  • Q2

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

    4

    5

     3

    2

    30s
  • 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

    30s
  • Q4

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

     1s 22s2 2p3

    1s2 2s2 2p1

    1s2 2s3 2p2

     1s2 2s2 2p2 3s1

    30s
  • Q5

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

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    30s
  • Q6

    How many valence electrons does Boron have?

     Four

    Two

     Three

    One

    30s
  • 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?

     Atom

     Molecule

     Compound

     None of These

    30s
  • 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?

     CH4

     HCl

     O2

     NaCl

    30s
  • 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

    30s
  • 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

    30s
  • 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

    30s
  • 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

    30s
  • 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.

    30s
  • Q14

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

    1

     2

     3

     4

    30s
  • Q15

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

      Calcium ion

     Chlorine ion

     Fluorine ion

     Carbon ion

    30s

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