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
51–60 of 143
Question 51
3 marks · Normal
Answer and see the solution →(a) Calcium chloride is formed when one calcium atom reacts with two chlorine atoms. Calcium transfers electrons to each chlorine atom.
Draw a dot-and-cross diagram to show the formation of calcium chloride. Label each ion and show their charges.
Question 52
4 marks · Normal
Answer and see the solution →A student attempts to draw the dot-and-cross diagram for lithium fluoride (LiF) but makes some mistakes. Examine the student’s diagram and answer the following questions.
(a)[2 marks]Student's dot-and-cross diagram for LiF Identify two mistakes in the student's dot-and-cross diagram for lithium fluoride.
(b)[2 marks]Draw a correct dot-and-cross diagram for lithium fluoride (LiF). Use dots (•) for lithium electrons and crosses (×) for fluorine electrons, or vice versa. Show only the outer shell electrons.
Question 53
1 mark · Normal
Answer and check →Which statement best describes the dot-and-cross diagram for calcium chloride (CaCl)?
- A.The calcium atom shares electrons equally with two chlorine atoms.
- B.The calcium atom transfers two electrons, one to each chlorine atom.
- C.Each chlorine atom gives an electron to the calcium atom.
- D.The calcium and chlorine atoms both lose all their outer shell electrons.
Question 54
4 marks · Normal
Answer and see the solution →Calcium chloride is an ionic compound formed from calcium and chlorine atoms.
(a)[1 mark]State the electronic configuration of a calcium atom and a chlorine atom.
(b)[1 mark]Describe, in terms of electron transfer, how calcium and chlorine form ions in calcium chloride.
(c)[2 marks]Draw a dot-and-cross diagram to show the ions present in calcium chloride (CaCl₂). Use dots (•) for calcium’s electrons and crosses (×) for chlorine’s electrons.
Question 55
2 marks · Hard
Answer and see the solution →Describe how electrons are transferred when a lithium atom and a fluorine atom react to form lithium fluoride. Your answer should explain how this transfer leads to the formation of ions.
Question 56
5 marks · Hard
Answer and see the solution →Calcium chloride is formed when calcium reacts with chlorine.
(a)[1 mark]State the electronic configuration of a calcium atom and a chlorine atom.
(b)[2 marks]Explain how calcium and chlorine atoms achieve full outer shells when forming calcium chloride.
(c)[2 marks]Draw a dot-and-cross diagram to show the ions formed in calcium chloride. Show only the outer shells.
Question 57
2 marks · Hard
Answer and see the solution →State the charge on each ion and the number of electrons in the outer shell of each ion in lithium fluoride.
Question 58
1 mark · Easy
Answer and see the solution →Write the formula for the ionic compound formed between aluminium ions and chloride ions.
Question 59
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the formula of the calcium ion and the oxide ion.
(b)[1 mark]What is the simplest formula for the ionic compound formed from these ions?
(c)[1 mark]Explain why the compound has this formula.
Question 60
2 marks · Easy
Answer and see the solution →Calculate the formula for the ionic compound formed when magnesium ions combine with nitrate ions. Show how the charges are balanced in your answer.