IGCSE Chemistry - Fundemantal Ideas
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.
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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.Rate this question:
- 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.Rate this question:
- 4.
Which one do you like?
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Option 1
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Option 2
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Option 3
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Option 4
Correct Answer
A. Option 1 -
- 5.
Type question here. Example: Practice makes you ________
Correct Answer
N/A - 6.
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 producedExplanation
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.Rate this question:
- 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 shellExplanation
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.Rate this question:
- 8.
What does the formula of H2O2 tell us (4 marks)
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May 08, 2025Quiz Edited by
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Jun 12, 2016Quiz Created by
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