Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Ionic Bonding
143 practice questions
Topics covered
- Ionic bonding in magnesium oxide19 practice questions
- Other examples of ionic bonding19 practice questions
- Calcium chloride19 practice questions
- Formulae for ionic compounds18 practice questions
- Giant ionic structures19 practice questions
- The physical properties of ionic substances19 practice questions
- The electrical conductivity of ionic substances19 practice questions
Practice questions
51–59 of 59 · Easy
Question 51
2 marks · Easy
Answer and see the solution →Explain, in terms of ions, why calcium iodide conducts electricity when molten but not when solid.
Question 52
3 marks · Easy
Answer and see the solution →The table below shows whether four substances conduct electricity in different states.
Electrical conductivity of four substances Substance Solid Molten Aqueous Calcium Bromide No Yes Yes Iron(II) chloride No Yes Yes Sodium phosphate No Yes Yes Iodine No No No (a)[1 mark]From the substances in the table, identify all that are ionic compounds.
(b)[1 mark]What property do these ionic compounds share in relation to conducting electricity?
(c)[1 mark]Explain how the table helped you determine which substances are ionic.
Question 53
1 mark · Easy
Answer and see the solution →State why silver chloride does not conduct electricity in the solid state.
Question 54
3 marks · Easy
Answer and see the solution →Zinc chloride is an ionic compound.
(a)[1 mark]Describe the movement of ions in solid zinc chloride.
(b)[1 mark]Describe the movement of ions in molten zinc chloride.
(c)[1 mark]Explain how movement of ions in the molten state affects electricity conduction.
Question 55
2 marks · Easy
Answer and see the solution →Out of 5 ionic salts, 2 are molten, 1 is in aqueous solution, and the remaining 2 are solid. How many of these salts would you expect to conduct electricity? Show your working.
Question 56
5 marks · Easy
Answer and see the solution →This question is about the formation of ions and charges in ionic bonding, including magnesium oxide and another compound.
(a)[1 mark]State the charge formed on a magnesium ion in magnesium oxide.
(b)[1 mark]Magnesium is in Group 2 of the Periodic Table. Explain why the charge on a magnesium ion is the value you stated in part (a).
(c)[1 mark]State the charge formed on the oxide ion in magnesium oxide.
(d)[1 mark]When potassium forms an ionic compound with chlorine, what is the formula of the ion formed by potassium? Include its charge.
(e)[1 mark]Explain, in terms of electrons, how a chlorine atom forms an ion.
Question 57
5 marks · Easy
Answer and see the solution →Ionic bonding depends on the strong attraction between oppositely charged ions. Magnesium oxide and aluminium oxide are two examples.
(a)[1 mark]State the charge on the magnesium ion and on the oxide ion in magnesium oxide.
(b)[2 marks]Explain why the electrostatic attraction in magnesium oxide is stronger than in sodium chloride.
(c)[1 mark]Aluminium oxide has the formula . State the charge on the aluminium ion and the oxide ion.
(d)[1 mark]Calculate the total positive charge and the total negative charge present in one formula unit of .
Question 58
5 marks · Easy
Answer and see the solution →This question is about common ions and how they are formed, using magnesium oxide and calcium fluoride as examples.
(a)[1 mark]Write the formula and charge of the ion formed by a magnesium atom.
(b)[1 mark]Explain why oxygen forms an ion with a negative charge.
(c)[1 mark]Calcium fluoride has the formula . What is the charge on a fluoride ion?
(d)[1 mark]Describe how calcium forms its ion. Mention what happens to its electrons.
(e)[1 mark]Sodium and sulphur can also form ions. Give the formula and charge of the ion formed by sulphur.
Question 59
5 marks · Easy
Answer and see the solution →This question is about ionic bonding in magnesium oxide and aluminium nitride.
(a)[3 marks]Draw a dot-and-cross diagram to show the ionic bonding in magnesium oxide (MgO).
Include charges on the ions.
(b)[2 marks]Aluminium is in Group 3 and nitrogen is in Group 5.
Using your answer to part (a) as a guide, describe how ions are formed when aluminium reacts with nitrogen to form aluminium nitride (AlN).