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Johor Trial 2024 Chemistry Kertas 1 · Pasir Gudang Set 1

Chemistry

Johor Trial 2024 Chemistry Kertas 1 · Pasir Gudang Set 1

  • Johor Trial Pasir Gudang Set 1
  • 40 questions
  • With explanations
1
The following information is about the atomic structure model put forward by one of the scientists. - Discovered neutral particles, that are neutrons, in the nucleus. - Neutrons contribute almost half of the mass of an atom. Who is the scientist?
2
Which chemical formula is correctly named according to the IUPAC nomenclature system? | | Chemical formula | IUPAC name | |---|---|---| | A | $\text{MgO}$ | Magnesium oxide | | B | $\text{SO}_3$ | Sulphur oxide | | C | $\text{CO}$ | Carbon dioxide | | D | $\text{Fe}_2\text{O}_3$ | Iron oxide |
3
Which of the following Group 1 elements has the smallest atomic size?
4
What is the meaning of metallic bond?
5
Which of the following is a process which occurs during tooth brushing?
6
The chemical substance with a low concentration of hydroxide ions is
7
How does temperature increase the rate of reaction?
8
A superconductor is an example of an alloy used in electrical transportation such as the Maglev train. What is the property of superconductors?
9
Diagram 1 shows the chemical formula of a substance: $\text{Fe}_2(\text{SO}_4)_3$ What is the name of the substance?
10
Diagram 2 shows elements A, B, C and D in the Periodic Table of Elements. The letters used are not the actual symbols of the elements. Which of the following should be kept in paraffin oil?
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