Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
201–210 of 359 · Easy
Question 201
1 mark · Easy
Answer and see the solution →Define the term 'alloy.'
Question 202
3 marks · Easy
Answer and see the solution →Answer the following about metals:
(a)[2 marks]Name two physical properties of copper.
(b)[1 mark]State one use of iron or steel.
Question 203
2 marks · Easy
Answer and see the solution →A pan is made using aluminium because of its low density. The pan has a mass of 540 g and a volume of 200 cm³. Calculate the density of aluminium in g/cm³.
Question 204
2 marks · Easy
Answer and see the solution →A pure metal rod can be bent easily because its layers of atoms can slide. In an alloy rod, a force of 200 N is needed to cause bending, but in the pure metal it requires only 120 N. Calculate how many times harder the alloy rod is to bend compared to the pure metal (give your answer to 1 decimal place).
Question 205
1 mark · Easy
Answer and see the solution →State one property of aluminium that makes it suitable for making aeroplane bodies.
Question 206
3 marks · Easy
Answer and see the solution →Pure aluminium is not commonly used for building structures. The table below shows two metals and two alloys.
Material Type Aluminium Pure metal Steel Alloy Duralumin Alloy Copper Pure metal (a)[1 mark]State why pure aluminium is rarely used instead of its alloys.
(b)[2 marks]Explain how alloying aluminium changes its structure to make it stronger.
Question 207
2 marks · Easy
Answer and see the solution →A newly-made sheet of aluminium has a mass of 5.4 g. After some time, a 0.0004 g layer of aluminium oxide forms on the surface, preventing further corrosion. Calculate the total mass of the sheet after the oxide layer has formed. Give your answer to 3 decimal places.
Question 208
2 marks · Easy
Answer and see the solution →Explain why aluminium is often used for cooking pans. Refer to two properties of aluminium in your answer.
Question 209
3 marks · Easy
Answer and see the solution →The table shows the strength of pure aluminium and some aluminium alloys.
Material Relative Strength Pure aluminium Low Aluminium + magnesium High Aluminium + copper Very high (a)[1 mark]Which of the materials in the table would be least suitable for use in construction? Give a reason.
(b)[1 mark]State how alloying with copper affects the strength of aluminium.
(c)[1 mark]Explain why adding another metal to aluminium changes its strength.
Question 210
1 mark · Easy
Answer and see the solution →Why does aluminium not corrode easily in air?