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
111–120 of 143
Question 111
2 marks · Hard
Answer and see the solution →Explain, in terms of the forces present, why ionic compounds such as sodium chloride have high boiling points.
Question 112
5 marks · Hard
Answer and see the solution →Crystals of sodium chloride are often seen as large, regular cubes under the microscope.
(a)[1 mark]State what is meant by the term 'crystalline' when describing a substance.
(b)[2 marks]Describe the arrangement of ions in the giant ionic lattice of sodium chloride as it relates to its crystalline appearance.
(c)[2 marks]Explain why the regular arrangement of ions results in sodium chloride crystals having a regular shape.
Question 113
2 marks · Hard
Answer and see the solution →Describe the arrangement of sodium and chloride ions in the giant ionic lattice of sodium chloride.
Question 114
1 mark · Easy
Answer and see the solution →State why potassium chloride conducts electricity when it is dissolved in water.
Question 115
3 marks · Easy
Answer and see the solution →The table shows three ionic compounds in different states:
States of ionic compounds Compound State Sodium chloride Solid Magnesium bromide Molten Potassium nitrate Aqueous (a)[1 mark]Which compound(s) in the table will conduct electricity? State all correct answers.
(b)[1 mark]State the condition required for any ionic compound to conduct electricity.
(c)[1 mark]Give one example from the table where the ionic compound will not conduct electricity, and state why.
Question 116
2 marks · Easy
Answer and see the solution →A student says that ‘solid lead(II) bromide contains charged particles, so it should conduct electricity’. Explain, giving a calculation or statement, why this is incorrect.
Question 117
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 118
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 119
1 mark · Easy
Answer and see the solution →State why silver chloride does not conduct electricity in the solid state.
Question 120
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.