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SECOND QUATER SCIENCE 9-SUMMATIVE TEST

Quiz by Tabares Roxanne

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

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40 questions
Show answers
  • Q1

    The following are examples of covalent compounds, which molecule is equivalent to 1 mole?

    multiplem://18gH2O:32 gO2

    160 g SO2

    80 g CO2                           

    30s
    S9MT-IIj-20
  • Q2

    In which way can you apply the knowledge on percentage composition?

    in knowing the value of the substance

    in identifying the element present

    multiplem://in checking if the substance is pure:knowing the amount of sodium in instant noodles

    30s
    S9MT-IIj-20
  • Q3

    Sort the following compounds in their respective unit category

    sorting://formula unit|NaCl,KCl:molecular unit|CO2,H2O

    30s
    S9MT -IIb -14
  • Q4

    Which of the following belongs to alkane group?

    multiplem://octane:butane

    ethene

    butene

    30s
    S9MT-IIh-18
  • Q5

    Which of the following is the correct structural formula of alkene?

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    30s
    S9MT-IIh-18
  • Q6

    Match the following organic household products to their chemical formula

    linking:// table sugar| C6H12O6:Ehyl alcohol|C2H5OH:acetone|C3H6O 

    30s
  • Q7

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

    the number of revolutions of electrons in nucleus

    the direction of electron spin.

    the electron's charges.

    the electron's exact location in orbit.

    30s
    S9MT-IIe-f-16
  • Q8

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

    3

    2

    5

    4

    30s
    S9MT-IIe-f-16
  • Q9

         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
    S9MT-IIe-f-16
  • Q10

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

    1s2 2s22p3

    1s2 2s22p1

    1s2 2s22p2 3s1

    1s2 2s32p2

    30s
    S9MT-IIe-f-16
  • Q11

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

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    30s
    S9MT-IIe-f-16
  • Q12

    How many valence electrons does Boron have?

    4

    1

    2

    3

    30s
  • Q13

    .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?

    formula unit

    compound

    molecule

    atoms

    30s
    S9MT -IIb -14
  • Q14

    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?

    HCl        

    NaCl

    O2

    CH4

    30s
    S9MT -IIb -14
  • Q15

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

    non-polar covalent bond

    polar covalent bond

    ionic bond

    covalent bond

    30s
    S9MT -IIb -14

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