Form 5 revision: Structure of atom (Form 4 chapter 2)
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Preview (12 questions)Show answers
  • Question 1
    10 seconds
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    Q.

    What is the process occurs when iodine is heated?

    answer
    sublimation
    alternatives
    Sublimation
  • Question 2
    20 seconds
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    Q.

    The graph shows ____________________________.

    answer choices

    supercooling curve

    heating curve

    cooling curve

  • Question 3
    20 seconds
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    Q.

    This graph will occur when _______________.

    answer choices

    the substance is not cooled evenly

    the substance is hard

    the substance has a low melting point than the room temperature

    the substance has a high melting point

  • Question 4
    30 seconds
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    Q.

    Which of the following is true?

    answer choices

    Liquid particles absorb heat and turn into solid

    Gas molecules contain more kinetic energy than liquid molecules

    Solid has lower force of attraction between molecules than liquid

    The process to turn liquid to gas is condensation

  • Question 5
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    Q.

    Rate of diffusion can be increased by ___________________

    answer choices

    decreasing the temperature

    increasing the temperature

    having a lower molecular mass

    having a higher molecular mass

  • Question 6
    180 seconds
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    Q.

    Which of the following has the highest rate of diffusion?

    answer choices

    ammonia

    hydrogen chloride

    methane

    carbon dioxide

  • Question 7
    10 seconds
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    Q.

    during the melting process, the substance exist in ________________.

    answer choices

    solid

    solid and liquid

    liquid

    liquid and gas

  • Question 8
    20 seconds
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    Q.

    Which two substances have the same number of valence electrons?

    Proton number of A: 8

    Proton number of Z: 6

    Proton number of D: 16

    Proton number of X: 11

    answer choices

    A and Z

    Z and D

    A and D

    Z and X

  • Question 9
    10 seconds
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    Q.

    The nucleon number of element A is 20. It contains 9 protons. What is the number of electron?

    answer choices

    20

    11

    9

    10

  • Question 10
    10 seconds
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    Q.

    Who discovered proton?

    answer choices

    J,J,Thompson

    James Chadwick

    Ernest Rutherford

    Neils Bohr

  • Question 11
    10 seconds
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    Q.

    Which isotope is used to detect the leaks in underground pipes?

    answer choices

    carbon - 14

    sodium - 24

    cobalt - 60

    uranium - 235

  • Question 12
    20 seconds
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    Q.

    Isotopes have the same ___________________ .

    answer choices

    chemical properties

    proton number

    nucleon number

    number of electron

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