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Johor Trial 2024 Chemistry Kertas 1

Chemistry

Johor Trial 2024 Chemistry Kertas 1

  • Johor Trial
  • 40 questions
  • With explanations
1
Which of the following substances consists of ions?
2
Diagram 1 shows the standard representation of an aluminium atom. $^{27}_{13}\text{Al}$ What is the number of valence electrons of the atom?
3
Diagram 2 shows the arrangement of particles for a change of state of matter. Which of the following is process W?
4
The following chemical equation represents a reaction. $$\text{NaHCO}_3 + \text{HCl} \rightarrow \text{NaCl} + \text{H}_2\text{O} + \text{CO}_2$$ What are the reactants in this equation?
5
Table 1 shows elements with their respective proton numbers. | Element | Proton number | |---|---| | W | 9 | | X | 11 | | Y | 19 | | Z | 20 | Which pair of elements has the same chemical properties?
6
Diagram 3 shows four elements in the Periodic Table of Elements. Which of the following elements can be used as a catalyst in a chemical reaction?
7
Diagram 4 shows a student applying solution X to his wound to kill bacteria. Which of the following Group 17 elements is the most suitable to be used to make solution X?
8
Diagram 5 shows a type of bond. What is the name of the bond?
9
Which of the following statements about the formation of a dative bond is correct?
10
Which of the following is a soluble salt?
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