SPM Chemistry 2023 Johor Trial Tangkak Kertas 1 – 40 Questions with Answers

Table 1 shows the number of protons and number of neutrons for atoms W, X, Y and Z. | Atom | Number of protons | Number of neutrons | |---|---|---| | W | 10 | 10 | | X | 11 | 12 | | Y | 12 | 12 | | Z | 17 | 18 | Based on the information in Table 1, which atom can form a negative ion?

A W B X C Y D Z

Two atoms of element X have the same mass as one copper atom. What is the relative atomic mass of X? [Relative atomic mass: Cu = 64]

A 8 B 16 C 32 D 64

Heat is absorbed or released during a change of state. Which of the following pairs is correctly matched?

A Process: Melting; Heat is released B Process: Boiling; Heat is released C Process: Sublimation; Heat is absorbed D Process: Deposition; Heat is absorbed

**[Bonus]** (One mole of each gas has the same number of molecules (I) and the same volume (III), but NH₃ has 4 atoms per molecule and CH₄ has 5, and their masses are 17 g and 16 g. The correct set, I and III, is not among the options. Any answer is accepted.) Which quantities are the same for one mole of ammonia (NH_3) and one mole of methane (CH_4) gases? [Relative atomic mass: H = 1, C = 12, N = 14] I Number of molecules II Number of atoms III Volume IV Mass

A I and II B I and IV C II and III D III and IV

Diagram 1 shows the set-up of the apparatus used to determine the empirical formula of a metal oxide. Which of the following metal oxides is suitable to be used in the experiment?

A Magnesium oxide B Copper(II) oxide C Aluminium oxide D Calcium oxide

Diagram 2 shows the structure of four atoms. In which sequence will the atoms be arranged in the Periodic Table?

A P, Q, R, S B R, P, S, Q C Q, P, S, R D S, R, P, Q

Diagram 3 shows the structural formula of compound T. What is the percentage by mass of carbon in compound T? [Relative atomic mass: H = 1; C = 12]

A 85.71% B 82.79% C 21.42% D 20.69%

Which of the following statements is true for hydrogen bonds?

A Wet pieces of paper stick together because of the hydrogen bonds formed B Hydrogen bonds are formed between hydrogen chloride molecules C Ethane has a higher boiling point than ethanol because ethane can form hydrogen bonds between its molecules D Hydrogen bonds are formed between a hydrogen atom bonded to an atom of high electronegativity such as bromine

Diagram 4 shows some types of compounds. Which compounds are soluble in water?

A I and II B I and IV C II and III D III and IV

Diagram 5 shows the apparatus set-up and observation for the electrical conductivity of compound A. Table 2 shows information about elements K, L, M and N. | Element | K | L | M | N | |---|---|---|---|---| | Position in the Periodic Table | Period 2, Group 14 | Period 3, Group 2 | Period 3, Group 17 | Period 2, Group 18 | Based on Diagram 5 and Table 2, choose the elements that can react to form compound A.

A K and N B L and N C K and M D L and M

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Johor Trial 2023 Chemistry Kertas 1 · Tangkak

Johor Trial 2023 Chemistry Kertas 1 · Tangkak

Johor Trial 2023 Chemistry Kertas 1 · Tangkak

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