Quick answer: Metallic bonding is the attraction between positive metal ions in a regular lattice and a sea of delocalised electrons that move freely between them. This Chemistry 9-10 test on metallic bonding has 8 questions worth 20 marks, to do in 45 minutes: metallic bond, electrons in a wire and why metals bend. The mark scheme is on a separate page; free printable PDF.
This chemistry grades 9-10 test on metallic bonding test works like a real class test. The mark scheme is on a separate page, so revise with the lesson first.
This test lasts 45 minutes and carries 20 marks. Answer every question. Use the words ions, delocalised electrons and layers where they apply, and show the working for any calculation. The marks in brackets show how many points to make.
Level: Chemistry grades 9-10 (GCSE · IGCSE · O Level · Class 9-10) · Curriculum: GCSE C2
Metallic bonding test: the test questions
Question 1 Metallic bond (2 marks)
Define a metallic bond. (2 marks)Question 2 Electrons in a wire (3 marks)
The diagram shows a metal wire connected to a cell.- Name the particles that carry the current in the wire. (1 mark)
- State the direction in which they move. (1 mark)
- Explain why the positive ions do not carry the current. (1 mark)
Question 3 Why metals bend (3 marks)
Explain why a copper bar can be bent without snapping. (3 marks)Question 4 Bronze statue (3 marks)
A bronze statue of mass 12.0 kg contains 88 % copper and the rest is tin.- Calculate the mass of copper. (2 marks)
- Calculate the mass of tin. (1 mark)
Question 5 Steel and iron (3 marks)
Explain why steel is harder than pure iron. (3 marks)Question 6 Sodium and magnesium (2 marks)
Explain why magnesium has a higher melting point than sodium. (2 marks)Question 7 Conducting heat (2 marks)
Explain why a metal pan heats up quickly on a stove. (2 marks)Question 8 Alloy or pure (2 marks)
Brass is harder than copper, but copper is a better electrical conductor. Explain both statements using particles. (2 marks)
