KSSM Form 3 Science Chapter 4

The diagram shows an apparatus set-up. A mixture of carbon and zinc oxide is heated up in a crucible. What is left inside the crucible after this experiment?

• Oxygen

• Carbon

• Zinc

• Carbon dioxide

The diagram shows the reactivity series of metals. The position of hydrogen is in between

• Iron and zinc

• Lead and tin

• Zinc and aluminium

• Mercury and copper

How can a metal react with oxygen?

• By providing carbon as fuel

• By providing heat

• By providing water

• By providing light

Diagram shows the apparatus set-up of an experiment to study the reaction between metal and oxygen. Which of the following statements are true about the reaction?

• Magnesium burns brightly with a white flame.

• A white powder known as magnesium oxide is produced.

• Magnesium burns slowly with a white flame.

• A white powder known as magnesium hydroxide is produced.

Which of the following is correct?

• Aluminium +Oxygen ➙ Aluminium oxide

• Aluminium + Carbon ➙ Aluminium oxide + carbon dioxide

• Aluminium + Hydrogen ➙ Aluminium hydroxide

• Aluminium + Carbon ➙ Aluminium carbonate

Metal react with oxygen to form

• Metal oxide

• Metal carbonate

• Metal dioxide

• Metal sulphate

What is the function of glass wool in the experiment?

• To separate metal powder from potassium magnate (VII).

• To melt the metal powder.

• To activate the potassium magnate (VII).

• To melt the potassium magnate (VII).

Which of the following is the example of metal X?

• Lead

• Gold

• Calcium

• Mercury

What is the function of anhydrous calcium chloride?

• To release oxygen.

• To release hydrogen.

• To dry up the hydrogen gas.

• To dry up the oxygen gas.

Choose the correct statement.

• If carbon is more reactive than the metal, it can remove oxygen from the metal oxide.

• If carbon is less reactive than the metal, it cannot remove oxygen from metal oxide.

• If carbon is less reactive than the metal, it can remove oxygen from metal oxide.

• If carbon is more reactive than the metal, it cannot remove oxygen from the metal oxide.