Chemistry_2022_SPM_TRIAL_MRSM

Protium, deuterium and tritium are the isotopes of hydrogen. Which of the following is the similarity of the isotopes?

• Chemical property

• Physical property

• Nucleon number

• Relative atomic mass

Diagram 1 shows the apparatus set-up to determine the empirical formula of oxide X. Which of the following is metal X?

• Zinc

• Copper

• Magnesium

• Sodium

Element Z is located in the same group as neon, Ne and krypton, Kr in the Periodic Table of Elements. Which of the following is the property of Z?

• Chemically inert

• Exists as diatomic molecules

• Exists as liquid at room temperature

• Conducts electricity in molten and aqueous solution

Ionisation of acid in water affects the pH value. Which of the following gives the highest pH value?

• 
• 
• 
• 

Diagram 2 shows a type of bond. Which of the following is correct about the bond?

• There is an electrostatic attraction force between the sea of electrons and the positively-charged metal ions

• A type of bond where the electron pairs shared come from one atom only

• A bond that is formed through the transfer of electrons between metal atoms and non-metal atoms

• The forces of attraction between hydrogen atoms that have bonded with an atom of high electronegativity in another molecule

How does temperature increase the rate of reaction?

• Increase the total number of reactant particles

• Increase the kinetic energy of reactant particles

• Increase the activation energy of the reaction

• Increase the number of effective collisions

Glass is made up of silicon dioxide and calcium carbonate. Diagram 3 shows a cookware made from glass. What is the substance added and the new property of the glass?

• Substance added:

  Sodium carbonate and lead (Ⅱ) oxide

  New property:

  Low expansion coefficient

• Substance added:

  Sodium carbonate and lead (Ⅱ) oxide

  New property:

  High expansion coefficient

• Substance added:

  Boron oxide and aluminium oxide

  New property:

  Low expansion coefficient

• Substance added:

  Boron oxide and aluminium oxide

  New property:

  High expansion coefficient

The following equation represents the reaction between iron and chlorine gas.

2Fe + 3Cl₂ → 2FeCl₃

What is the change in oxidation number of chlorine?

• +2 → +3

• -2 → -3

• -1 → 0

• 0 → -1

Substance W has the following properties.

• Gives off carbon dioxide gas and water when burnt in oxygen

• Dissolves in water

What is substance W?

• Propanol

• Pentane

• Pentene

• Pentanoic acid

Diagram 4 shows the blast furnace used to extract iron from its ore. Which of the following chemical equation represents the reaction in Zone 2?

• C + O₂ → CO₂

• C + CO₂ → 2CO

• Fe₂O₃ + 3CO → 2Fe + 3CO₂

• CaO + SiO₂ → CaSiO₃