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Second Quarterly Assessment in Science 9

Quiz by Michelle

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35 questions
Show answers
  • Q1
    According to him, atom has a tiny, massive positive nucleus at its center
    Joseph John Thomson
    Ernest Rutherford
    John Dalton
    Niels Bohr
    30s
  • Q2
    Which of the following is true about electrons?
    it is equal to number of neutrons and atomic number.
    it is equal to the number of protons and atomic mass.
    it is equal to the number of protons and neutrons.
    it is equal to the number of protons and atomic number.
    30s
  • Q3
    When an electron absorbs energy, it jumps from lower to higher energy level; the electron is said to be in
    steady state
    ground state
    excited state
    emission state
    30s
  • Q4
    If A = 20 and Z = 10 and n = 10, what is the element
    Ne
    Ca
    Na
    Kr
    30s
  • Q5
    Which of the following statements satisfy the Pauli’s exclusion Principle?
    energy sublevels or orbitals of atoms are filled in order of increasing energy
    no more than 2 electrons with opposite spins can occupy an orbital
    electrons jump from lower energy to higher energy level
    when orbitals are of the same energy, such as the p,d,f orbitals, the electrons occupy the orbitals singly before they pair up in any one of them.
    30s
  • Q6
    Which of the following has correct electron configuration?
    O – 1s2 2s3 2p3
    N – 1s2 2s2 2p3
    B – 1s2 2s2 2p3
    C – 1s1 2s2 2p3
    30s
  • Q7
    Which of the following elements / atoms has an electron configuration of 1s2 2s2 2p6 3s2 3p6?
    Ne
    Kr
    Xe
    Ar
    30s
  • Q8
    Which group of elements has a stable configuration?
    Alkali Metals
    Halogens
    Noble Gases
    Metalloids
    30s
  • Q9
    Which of the properties of atoms is the most suitable reference for the kind of bond that will take place between / among them?
    ionization energy
    atom size
    electronegativity
    electron affinity
    30s
  • Q10
    How atoms attain stability?
    when they exchange their charges to other atoms
    when they didn’t satisfy nor follow the Octet Rule
    when the electrons jump from lower to higher energy level
    when they possess eight valence electrons in their outermost energy level
    30s
  • Q11
    How many valence electrons are there in Magnesium?
    12
    2
    25
    3
    30s
  • Q12
    Which of the following pairs of atom is most likely to form a covalent compound?
    Ba, Cl
    Na, O
    C, O
    Mg, Br
    30s
  • Q13
    Why can metals be hammered without breaking?
    they reflect light.
    They are not brittle
    They are malleable
    They are ductile
    30s
  • Q14
    These are region of space surrounding the nucleus in which the electrons are most likely to be found.
    principal energy level
    sublevels
    Orbitals
    electron space
    30s
  • Q15
    How many electrons are there in p sublevel?
    14
    2
    6
    10
    30s

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