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IGCSEScienceCambridge (CIE)Co-ordinated Sciences (Double Award)ChemistryExam Questions2. Atoms, Elements & CompoundsAtomic Structure & the Periodic Table

Atomic Structure & the Periodic Table (Cambridge (CIE) IGCSE Co-ordinated Sciences (Double Award): Chemistry): Exam Questions

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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?

    A

    Q and S

    B

    Q and T

    C

    R and T

    D

    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?

          A

           W and X

          B

           Y and Z

          C

           W and Y

          D

           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 tier 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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                41 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

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