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
41–50 of 59 · Easy
Question 41
3 marks · Easy
Answer and see the solution →(a)[1 mark]Name the two types of ions found in sodium chloride.
(b)[1 mark]Describe the arrangement of ions around a single sodium ion in the lattice.
(c)[1 mark]State whether sodium chloride exists as molecules or as a giant ionic lattice.
Question 42
2 marks · Easy
Answer and see the solution →Ionic compounds often form crystals. Explain why the crystalline property is linked to the structure of their ions.
Question 43
3 marks · Easy
Answer and see the solution →The table shows part of the arrangement of ions around a sodium ion in sodium chloride:
Ion Count Distance from central sodium ion (pm) Chloride ion 6 280 Sodium ion 12 400 Chloride ion 8 490 (a)[1 mark]What type of lattice is formed by sodium chloride?
(b)[1 mark]How many chloride ions are nearest to each sodium ion?
(c)[1 mark]Describe how the pattern of ions continues in the lattice.
Question 44
1 mark · Easy
Answer and see the solution →State why ionic compounds such as sodium chloride have high melting points.
Question 45
3 marks · Easy
Answer and see the solution →(a)[1 mark]What does it mean if a substance is described as 'crystalline'?
(b)[2 marks]Explain how the structure of sodium chloride leads to its crystalline appearance.
Question 46
2 marks · Easy
Answer and see the solution →The strong electrostatic forces between ions in an ionic lattice result in high melting points for ionic compounds.
Suppose it takes 780 kJ of energy to melt 1 mole of sodium chloride (NaCl). Calculate the energy required to melt 2.5 moles of sodium chloride.
Show your working and state the unit.
Question 47
2 marks · Easy
Answer and see the solution →In sodium chloride, each sodium ion (Na^+) is surrounded by 6 chloride ions (Cl^-).
Calculate the total number of chloride ions immediately surrounding sodium ions in a lattice that contains 4 sodium ions.
Show your working.
Question 48
1 mark · Easy
Answer and see the solution →State why potassium chloride conducts electricity when it is dissolved in water.
Question 49
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 50
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.