Selangor Trial 2023 Chemistry Kertas 1 · Modul Pintas

Chemistry

Selangor Trial 2023 Chemistry Kertas 1 · Modul Pintas

• Selangor 州试卷 Modul Pintas · 2023
• 40 题

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2026-10-29

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1

What is done after collecting data in a scientific investigation?

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A Interpreting and analysing the data B Making a hypothesis C Constructing an inference D Identifying the variables

T4 Chapter 1.1 Development in Chemistry Field and Its Importance in Daily Life

2

Which of the following correctly shows the relative atomic mass of nitrogen?

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A $\dfrac{\text{The average mass of a nitrogen atom}}{\text{The mass of a carbon-12 atom}}$ B $\dfrac{\text{The average mass of a nitrogen atom}}{12 \times \text{The mass of a carbon-12 atom}}$ C $\dfrac{\text{The average mass of a nitrogen atom}}{\frac{1}{12} \times \text{The mass of a carbon-12 atom}}$ D $\dfrac{\text{The mass of a carbon-12 atom}}{\frac{1}{12} \times \text{The average mass of a nitrogen atom}}$

T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass

3

**[Bonus]** 本题在原卷扫描件中缺失（漏扫），无法显示题目，作送分处理：选择任何答案都算对。 This question is missing from the original scanned paper, so it cannot be shown. It is a bonus question: any answer is marked correct. Soalan ini tiada dalam imbasan kertas asal, jadi tidak dapat dipaparkan. Soalan ini dikira bonus: sebarang jawapan dikira betul.

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A — B — C — D —

4

**[Bonus]** 本题在原卷扫描件中缺失（漏扫），无法显示题目，作送分处理：选择任何答案都算对。 This question is missing from the original scanned paper, so it cannot be shown. It is a bonus question: any answer is marked correct. Soalan ini tiada dalam imbasan kertas asal, jadi tidak dapat dipaparkan. Soalan ini dikira bonus: sebarang jawapan dikira betul.

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A — B — C — D —

5

Which of the following is an example of an oxidising agent?

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A Chlorine water B Magnesium metal C Sodium iodide solution D Iron(II) sulphate solution

T5 Chapter 1.1 Oxidation and Reduction

6

Which of the following statements is true about exothermic reactions?

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A Cause the temperature of the surroundings to increase B Reactions that absorb heat energy from the surroundings C The products contain more energy than the reactants

T5 Chapter 3.1 Heat Change in Reactions

7

Ice cream contains oil and water that do not mix. Which of the following food additives is added to overcome the situation?

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A Emulsifiers B Antioxidants C Thickeners D Stabilisers

T5 Chapter 5.3 Food Additives

8

Diagram 1 shows the standard representation symbol of a beryllium atom. ${}^{9}_{4}\text{Be}$ What is the number of protons for the beryllium atom?

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A 2 B 3 C 4 D 9

T4 Chapter 2.3 Atomic Structure

9

Diagram 2 shows the electron arrangement of atom X. Which of the following is the position of element X in the Periodic Table of Elements? | | Group | Period | |---|---|---| | A | 5 | 2 | | B | 5 | 3 | | C | 15 | 2 | | D | 15 | 3 |

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A A B B C C D D

T4 Chapter 4.2 The Arrangement in the Periodic Table of Elements

10

Which of the following reactions is a neutralisation reaction?

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A Hydrochloric acid + Calcium carbonate → Calcium chloride + Water + Carbon dioxide B Sulphuric acid + Copper(II) oxide → Copper(II) sulphate + Water C Hydrochloric acid + Potassium manganate(VII) → Potassium chloride + Manganese(II) chloride + Chlorine + Water D Sulphuric acid + Zinc → Zinc sulphate + Hydrogen gas

T4 Chapter 6.7 Neutralisation

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