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Q2 PRE-TEST SCIENCE 9

Quiz by Aren Valerio

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

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includes Teacher and Student dashboards

Measures 6 skills from
Grade 9
Science
Philippines Curriculum: Grades K-10 (MELC)

S9MT-IIg-17
S9MT-IIe-f-16
S9MT -IIb -14
S9MT-IIh-18
S9MT-IIi-19
S9MT-IIj-20

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40 questions
Show answers
  • Q1

    1.     The spin quantum number of an electron can be thoughtof 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
  • Q2

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

    5

    2

    4

    3

    30s
  • Q3

    3. 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= +½

    n = 2, l = 0, ml= 1, ms = +1

     n = 2, = 0, ml= 1, ms =+½

    n = 2, l = 0, ml = 0, ms= +1   

    30s
  • Q4

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

    1s2 2s2 2p1    

     1s2 2s2 2p

    1s2 2s3 2p2    

    1s2 2s2 2p2 3s1

    30s
  • Q5

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

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

    6. How many valence electrons does Boron have?

    two

    four

    one

    three  

    30s
  • Q7

    7. Covalent andionic bonding produce certain types of compounds that have different properties. What is the general term used for all the compounds with covalentbond?

    compound

    atom

    molecule

    none of the choices

    30s
  • Q8

    8.  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

    NaCl    

    O2

    HCl  

    30s
  • Q9

    9.  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-polarcovalent bond 

    polar covalent bond

    covalent bond

    ionicbond    

    30s
    S9MT-IIg-17
  • Q10

    10.  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?

    sucrose (sugar) 

    dihydrogen monoxide (water)  

    sodium chloride (NaCl)

    oxygen gas

    30s
    S9MT-IIg-17
  • Q11

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

    none of the choices

    shared unequally with non-metal

    transferred to non-metal 

    shared to a non-metal

    30s
    S9MT-IIg-17
  • Q12

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

    All metalloids have the same valence electrons

    Elements on the same family have the same valence electrons

    Noble Gases elements have seven valence electrons

    Elements on the same period have the same valence electrons

    30s
    S9MT-IIg-17
  • Q13

    13. Which bestd escribes an anion?

    It has more protons than electrons.

    It has more electrons than protons.

    It has a neutral charge.

     It has more neutrons than protons.

    30s
    S9MT-IIe-f-16
  • Q14

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

    2

    3

    4

    1

    30s
    S9MT-IIe-f-16
  • Q15

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

    Calcium ion   

    Fluorine ion

    Chlorine ion 

    Carbon ion 

    30s

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