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IGCSEChemistryCambridge (CIE)Exam Questions2. Atoms, Elements & CompoundsAtomic Structure & the Periodic Table

Atomic Structure & the Periodic Table (Cambridge (CIE) IGCSE Chemistry)

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Atomic Structure & the Periodic Table

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Atomic Structure & the Periodic Table

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11 mark

Which option correctly describes the relative charges and masses of the subatomic particles?

 

Proton

Neutron

Electron

Relative mass of proton

A

+1

0

0

0.00054

B

0

+1

+1

1

C

0

+1

-1

0.00054

D

+1

0

-1

1

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    21 mark

    The atomic number of element Q is 9 and its mass number is 19.

    In which group of the Periodic Table should element Q be placed?

    • Group 0

    • Group I

    • Group VII

    • Group II

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    31 mark

    The diagram shows the atomic structure of an element.

    q3-2-1-mcq-easy-cie-igcse-che

    Which element is it?

    • Carbon

    • Beryllium

    • Oxygen

    • Boron

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    41 mark

    The atomic structure of atoms Q, R, S and T are shown in the table.

    Atom

    Number of protons

    Number of neutrons

    Number of electrons

    Q

    6

    7

    6

    R

    7

    7

    7

    S

    6

    8

    6

    T

    8

    8

    8

    Which two atoms are isotopes?

    • Q and S

    • Q and T

    • R and T

    • R and S

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    51 mark

    Substances can be broadly classified into three categories which are elements, compounds and mixtures.

    Which of the following statements is correct?

    • Elements contain different atoms

    • Compounds consist of elements that are not chemically combined

    • Mixtures consist of elements that are chemically combined

    • A mixture can contain elements and compounds

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    11 mark

    The structure of four particles is described in the table.

    Particle

    Number of protons

    Number of neutrons

    Number of electrons

    Li

    3

    X

    3

    Li+

    3

    4

    2

    F

    Y

    10

    9

    F-

    9

    10

    Z

    What are the correct values for X, Y and Z?

     

    X

    Y

    Z

    A

    4

    7

    9

    B

    3

    9

    9

    C

    4

    9

    10

    D

    3

    7

    10

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      21 mark

      Element X contains 12 of each sub-atomic particle.

      What is the correct Group number for element X?

      • Group 0

      • Group I

      • Group VII

      • Group II

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      31 mark

      Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. What is element X?

      • Beryllium

      • Carbon

      • Tin

      • Lead

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      41 mark

      Potassium fluoride is an ionic compound formed when one atom of potassium bonds with one atom of fluorine.

      Which row correctly describes the charge and electronic configuration of each ion in the compound?

       

      Potassium ion

      Fluorine ion

      A

      1 - 

      2, 8, 8

      1 +

      2, 8

      B

      1 +

      2, 8, 8

      1 -

      2, 8

      C

      1 +

      2, 8, 8 ,1

      1 -

      2, 7

      D

      1 -

      2, 8, 8, 2

      1 +

      2, 6

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        51 mark

        A section of the Periodic Table is shown below.

        q5-2-1-mcq-easy-cie-igcse-chemistry

        The electronic structure of elements W, X, Y and Z are shown in the table.

         

        Electronic structure

        W

        2, 1

        X

        2, 4

        Y

        2, 8, 2

        Z

        2, 8

        Which elements have the correct electronic structure?

        •  W and X

        •  Y and Z

        •  W and Y

        •  X and Z

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        11 mark

        The X+ ion of element X has 16 electrons and a nucleon number of 37. 

        What is the correct Group number for element X?

        • VII

        • VIII

        • III

        • I

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        21 mark

        Which row of the table correctly describes the link between outer shell electrons, Group number and Period number?

         

        outer electrons same as

        group number same as

        period number same as

        A

        group number

        period number

        outer electrons

        B

        period number

        group number

        outer electrons

        C

        group number

        outer electrons

        number of electron shells

        D

        outer electrons

        group number

        number of electron shells

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          31 mark

          Extended Only

          Which row correctly describes the number of outer shell electrons and properties of isotopes?

           

          Number of electrons

          Chemical properties

          A

          same

          same

          B

          same

          different

          C

          different

          same 

          D

          different

          different

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            4
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            Separate: Chemistry and Extended Only

            Iridium has two isotopes, 191Ir and 193Ir. Calculate the relative atomic mass of iridium using the data given:

            Mass number

            191

            193

            Percentage abundance 

            62.7%

            37.3%

            • 191.2

            • 191.6

            • 191.7

            • 192.5

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            51 mark

            A selenide ion has the following notation.

            Se presubscript 34 presuperscript 79 superscript 2 minus end superscript

            Which row correctly describes the subatomic particles in a selenide ion?

             

            Protons

            Neutrons

            Electrons

            A

            79

            34

            34

            B

            34

            45

            34

            C

            34

            45

            36

            D

            45

            34

            32

              Choose your answer

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