IGCSE Chemistry - Fundemantal Ideas

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Quizzes Created: 1 | Total Attempts: 608
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About This Quiz


This IGCSE Chemistry quiz titled 'Fundamental Ideas' tests key concepts such as atomic structure and reactions of elements like sodium. It assesses understanding through various question forms, enhancing students' knowledge of fundamental chemistry principles.

IGCSE Chemistry - Fundemantal Ideas - Quiz

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  • 2. 

    The atomic number of sodium is 11. How many neutrons are in an atom of sodium with a mass number 23?

    Explanation
    The atomic number of an element represents the number of protons in its nucleus. Since the atomic number of sodium is 11, it means that there are 11 protons in a sodium atom. The mass number of an atom is the sum of its protons and neutrons. In this case, the mass number of sodium is given as 23. To find the number of neutrons, we subtract the atomic number (11) from the mass number (23). Therefore, there are 12 neutrons in an atom of sodium with a mass number 23.

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  • 3. 

    How many protons are in an atom of sodium?

    Explanation
    The atomic number of sodium is 11, which represents the number of protons in an atom of sodium. Therefore, there are 11 protons in an atom of sodium. The word "eleven" is simply another way of expressing the number 11.

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  • 4. 

    Which one do you like?

    • Option 1

    • Option 2

    • Option 3

    • Option 4

    Correct Answer
    A. Option 1
  • 5. 

    Type question here. Example: Practice makes you ________

    Correct Answer
    N/A
  • 6. 
    Answer the pictured question - ProProfs

    Answer the pictured question

    Correct Answer
    two sodium atoms react
    two bonded chlorine atoms react
    one chlorine molecule (reacts)
    two sodium ions and two chloride ions are produced
    two molecules of sodium chloride are produced
    Explanation
    This answer is correct because it accurately describes the reaction between sodium and chlorine. Two sodium atoms react with two bonded chlorine atoms, resulting in the formation of one chlorine molecule. This reaction produces two sodium ions and two chloride ions, which then combine to form two molecules of sodium chloride.

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  • 7. 

    Why are potassium and sodium in the same group?

    Correct Answer
    both react in a similar way
    both have 1 electron in the outer shell
    both have one electron in the outer shell
    Explanation
    Potassium and sodium are in the same group because they both react in a similar way. This means that they have similar chemical properties and react with other elements in similar ways. Additionally, both potassium and sodium have one electron in their outer shell, which makes them highly reactive and likely to form compounds with other elements.

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  • 8. 

    What does the formula of H2O2 tell us (4 marks)

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  • Current Version
  • May 08, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 12, 2016
    Quiz Created by
    Tigerkgeorge2
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