Metals

• Aluminium
• Iron
• Lead
• Copper

How does the reactivity of potassium compare with that of sodium and how does the reactivity of calcium compare with that of magnesium?

• A

• B

• C

• D

A metal has the following properties.

1. It does not react with cold water.

2. It reacts with dilute hydrochloric acid.

3. It cannot be extracted from its oxide using carbon.

Between which two metals in the reactivity series should it be placed?

• calcium and magnesium

• iron and copper

• magnesium and zinc

• zinc and iron

Why does the magnesium stop the iron from rusting?

• Magnesium reacts in preference to the iron.

• Magnesium reacts to form a protective coating of magnesium oxide on the iron.

• The magnesium forms an alloy with the iron.

• The magnesium stops oxygen in the water from getting to the iron.

Pieces of copper, iron, magnesium, and zinc are added to separate test-tube containing dilute hydrochloric acid. Which test-tube contains iron and dilute hydrochloric acid?

• 
• 
• 
• 

What is the order of reactivity of these four metals starting with the most reactive to least reactive?

• copper → zinc → M → magnesium

• copper → M → zinc → magnesium

• magnesium → M → zinc → copper

• magnesium → zinc → M → copper

Which metal can be displaced from its oxide by using this method?

• calcium

• lead

• magnesium

• potassium

The table gives information about three different metals G, H, and J. What is the order of reactivity of these metals, starting from the most reactive?

• G - H - J

• H - G - J

• H - J - G

• J - H - G

• calcium oxide

• copper(II) oxide

• magnesium oxide

• sodium oxide