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THIRD QUARTERLY ASSESSMENT IN PHYSICAL SCIENCE-SY-2022-2023

Quiz by Evangeline D. Tala

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50 questions
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  • Q1

    When the star has used up all its hydrogen fuel. Which of the following statements BEST describe stellar nucleosynthesis?

    It is the formation of elements during a supernova explosion.

    It is the formation of light elements such as hydrogen and helium.

    It is the process by which elements are formed within stars.

    It is the process by which elements are produced ingas clouds.

    120s
  • Q2

    Which of the following is TRUE about the formation of elements lighter than iron in the core of the stars?    

    I. When the elements combine, they release energy that can fuel the nuclear fusion reactions in the star.   

    II. When the elements combine, they produce a nucleus with a mass lower than the sum of their masses.  

    III. When there is an input of energy from nuclear fission reactions in the star, the elements are formed.   

    IV. When the elements combine, they produce a nucleus with a mass greater than the sum of their masses.

    I

    II

    III

    IV

    120s
  • Q3

    Which of the following shows the proper sequence of stages of stellar evolution of a low-mass star?

    Main sequence star – protostar - red giant - whitedwarf

    Main sequence star - red giant - white dwarf –protostar

    Protostar - main sequence star - red giant - white dwarf

    Protostar - main sequence star - white dwarf - red giant

    120s
  • Q4

    Which of the following is one of the products of the reaction?                                                                      

    Question Image
    Answer Image
    Answer Image
    Answer Image
    Answer Image
    120s
  • Q5

    Synthetic elements with atomic numbers higher than that of Uranium (Z = 92).

    Superheavy Elements                           

    Transuranic Elements                            

    Light Elements

    Heavy Elements

    120s
  • Q6

    Which of the following DOES NOT match with each other?

    Helium 3: Alpha Particle                      

    CNO: Carbon Fusion Cycle

    R-process: Supernova Explosion

    Iron: Alpha Ladder                                

    120s
  • Q7

    Which of the following determines the polarity of a bond between two elements?

    The difference in electronegativity between the two elements.

    The number of valence electrons in the two elements.

    The difference in first ionization energy between the two elements.

    The type of bond between the two elements.

    120s
  • Q8

    The ability of an atom to attract a pair of electrons in a chemical bond is known as _____.

    electronegativity

    ionization energy

    electron affinity         

    nuclear affinity           

    120s
  • Q9

    Which of the following will be the solvent if a nonpolar substance dissolves in an unknown liquid?

    Polar

    Ionic                 

    Both polar & nonpolar

    Non-polar                 

    120s
  • Q10

    In the given molecule BeCl₂, Be is the central atom, while Cl₂ is the terminal atom surrounded by two bonding electrons and with no lone pairs. So, the general formula is _____ with a geometrical  shape of _____

    AX₂E₂; angular     

    AX₂; linear       

    AX₃; trigonal planar           

    AX₃E; trigonal pyramidal     

    30s
  • Q11

    There are molecules that are polar in bond but non-polar in shape. Which of the following is a       molecule with a polar bond and a nonpolar molecule?

    CO2

    O3

    H₂O

    N2

    120s
  • Q12

    Which of the following is TRUE about H2O?

    Polar

    Linear Structure                 

    Low boiling point

    Non-Polar                 

    120s
  • Q13

    Supposedly a hypothetical molecule has an electronegativity difference of 0.5, what is the type of chemical bond present?

    Polar covalent                 

    Nonpolar covalent

    Hydrogen

    Ionic

    120s
  • Q14

    Which of the following Intermolecular Forces of Attraction (IMFAs) is considered as the weakest?

    Dipole-dipole                

    H-bonding            

    London Dispersion

    Ion-dipole                

    120s
  • Q15

    A molecule shape is a three-dimensional arrangement of atoms or bonding groups around a central atom. The molecular shape is governed by the valence shell electron repulsion (VSEPR) theory.

    The first and second statements are true.

    The first statement is false while the second statement is true.

    The first statement is true while the second statement is false.

    The first and second statements are false.

    120s

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