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

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

Exam code: 0620 & 0971

3 hours44 questions

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Atomic Structure & the Periodic Table

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1
1 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

    Choose your answer

    2
    1 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

    Choose your answer

    3
    1 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

    Choose your answer

    4
    1 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

    Choose your answer

    5
    1 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

    Choose your answer

    6
    1 mark

    Which diagram shows a mixture of compounds?

    Boxes A–D. A: 5 separate white circles. B: white–black pairs. C: white–black pairs and groups of two white and one black. D: separate white and black circles.

      Choose your answer

      7
      1 mark

      Which statement about carbon is correct?

      • It has 4 electron shells.

      • It has 2 outer shell electrons.

      • It has 12 nucleons.

      • It has an electron configuration of 2,8,2.

      Choose your answer

      8
      1 mark

      Two atoms, X and Y can be represented as shown

      straight X presubscript 3 presuperscript 7 space space space space space space space space space space space space space space straight Y presubscript 3 presuperscript 8

      Which row is correct for both atoms?

      electron configuration of X

      electron configuration of Y

      Is Y an isotope of X?

      A

      2,1

      2,1

      Yes

      B

      2,1

      2,6

      Yes

      C

      2,5

      2,1

      No

      D

      2,5

      2,6

      No

        Choose your answer

        1
        1 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

          Choose your answer

          2
          1 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

          Choose your answer

          3
          1 mark

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

          • Beryllium

          • Carbon

          • Tin

          • Lead

          Choose your answer

          4
          1 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

            Choose your answer

            5
            1 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

            Choose your answer

            6
            1 mark

            Which diagram shows a mixture of noble gases?

            Four square diagrams labelled A to D, each containing scattered black and white dots in different arrangements, resembling molecule structures.

              Choose your answer

              7
              1 mark

              Two atoms, X and Y can be represented as shown

              straight X presubscript 3 presuperscript 7 space space space space space space space space space space space space space space straight Y presubscript 3 presuperscript 8

              Which statement is correct for both atoms?

              • They have the same chemical properties because they have the same number of neutrons.

              • They have the same chemical properties because they have the same number of electrons in their outer shell.

              • They have the same physical properties because they have the same number of electrons in their outer shell.

              • They have the same physical properties because they have the same number of protons.

              Choose your answer

              1
              1 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

              Choose your answer

              2
              1 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

                Choose your answer

                3
                1 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

                  Choose your answer

                  4
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                  1 mark

                  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

                  Choose your answer

                  5
                  1 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

                    6
                    1 mark

                    Copper has two naturally occurring isotopes, 63Cu and 65Cu. The relative abundance of 63Cu is 69%.

                    What is the relative atomic mass of copper?

                    • 63.6

                    • 64.0

                    • 64.4

                    • 65.0

                    Choose your answer