Johor Trial 2024 Chemistry Kertas 1 · Pasir Gudang Set 1

Chemistry

Johor Trial 2024 Chemistry Kertas 1 · Pasir Gudang Set 1

• Johor 州试卷 Pasir Gudang Set 1
• 40 题
• 附解析

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?

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A Neils Bohr B J.J. Thomson C James Chadwick D Ernest Rutherford

T4 Chapter 2.2 The Development of the Atomic Model

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 |

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A A B B C C D D

T4 Chapter 3.3 Chemical Formula

3

Which of the following Group 1 elements has the smallest atomic size?

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A Lithium B Sodium C Potassium D Magnesium

T4 Chapter 4.4 Elements in Group 1

4

What is the meaning of metallic bond?

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A A bond formed involving transfer of electrons B A bond formed when the shared pair of electrons comes from one atom only C A bond formed involving electrostatic attraction between the sea of electrons and positively charged metal ions

T4 Chapter 5.6 Metallic Bond

5

Which of the following is a process which occurs during tooth brushing?

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A Oxidation B Hydrogenation C Neutralisation D Reduction

T4 Chapter 6.7 Neutralisation

6

The chemical substance with a low concentration of hydroxide ions is

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A strong acid B weak acid C strong alkali D weak alkali

T4 Chapter 6.3 Strength of Acids and Alkalis

7

How does temperature increase the rate of reaction?

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A Increases the total number of reactant particles B Increases the kinetic energy of reactant particles C Increases the activation energy of the reaction D Increases the number of effective collisions

T4 Chapter 7.4 Collision Theory

8

A superconductor is an example of an alloy used in electrical transportation such as the Maglev train. What is the property of superconductors?

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A Has a high tensile strength B Has low forging strength C Does not have high heat resistance D Does not have electrical resistance at very low temperatures

T4 Chapter 8.1 Alloy and Its Importance

9

Diagram 1 shows the chemical formula of a substance: $\text{Fe}_2(\text{SO}_4)_3$ What is the name of the substance?

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A Iron sulphide B Iron(I) sulphate C Iron(II) sulphate D Iron(III) sulphate

T4 Chapter 3.3 Chemical Formula

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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A A B B C C D D

T4 Chapter 4.4 Elements in Group 1

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