Science Form 3 Chapter 4

What are minerals?

• solid elements and compounds present naturally with definite crystalline structures and chemical compositions

• solid elements or compounds present naturally with definite crystalline structures and chemical compositions

• that can be found in the Earth’s crust

• contained in rocks found in the Earth’s crust

Which of the following minerals are elements?

• Galena

• Diamond

• Bauxite

• Gold

Which of the following minerals are compounds?

• Galena

• Diamond

• Bauxite

• Gold

Tick ( ✓ ) the various forms of calcium carbonate.

• Limestone

• Coral

• Shell

• Quartz

Predict the gas released when an acid is added to an eggshell.

• Carbon monoxide

• Oxygen

• Carbon dioxide

• Hydrogen

State the relationship between the vigorous of the reaction and the reactivity of metal to oxygen.

• The less vigorous the metal reacts with oxygen, the more reactive the metal is to oxygen.

• The more vigorous the metal reacts with oxygen, the less reactive the metal is to oxygen.

• The more vigorous the metal reacts with oxygen, the more reactive the metal is to oxygen.

• The less vigorous the metal reacts with oxygen, the less reactive the metal is to oxygen.

What is reactivity series of metals?

• Arrangement of metals according to their reactivity towards hydrogen.

• Arrangement of metals according to their reactivity towards water.

• Arrangement of metals according to their reactivity towards carbon dioxide.

• Arrangement of metals according to their reactivity towards oxygen.

Complete the reactivity series of metals below.

Potassium, sodium, calcium, ______________ , aluminium, carbon,

• magnesium

• zinc

• iron

• lead

Metals react with oxygen to form ____________.

• carbon dioxides

• metal dioxides

• carbon oxides

• metal oxides

The most reactive metal in the reactivity series of metals is

• potassium

• calcium

• carbon

• oxygen