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
21–30 of 60 · Normal
Question 21
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 22
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 23
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 24
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 25
2 marks · Normal
Answer and see the solution →State the formulae for the following ionic compounds:
(a)[1 mark]potassium sulfide
(b)[1 mark]aluminium nitrate
Question 26
4 marks · Normal
Answer and see the solution →The following ions are present in a solution: Ca2+, OH–, Fe3+, Cl–.
(a)[1 mark]Name the ionic compound formed when Ca2+ reacts with OH–.
(b)[1 mark]Write the formula of the compound formed between Ca2+ and OH–.
(c)[1 mark]Write the formula for the compound formed when Fe3+ reacts with Cl–.
(d)[1 mark]State why brackets are used in the formula for the compound formed between Ca2+ and OH–.
Question 27
3 marks · Normal
Answer and see the solution →Calculate the formula for the ionic compound formed between magnesium ions (Mg2+) and phosphate ions (PO4^3–). Show your working.
Question 28
3 marks · Normal
Answer and see the solution →Explain how you work out the formula for iron(II) sulfate, using the charges on the ions and their names.
Question 29
4 marks · Normal
Answer and see the solution →The table shows the ions present in four different ionic compounds. Complete the formula for each compound in the table below:
Compound name Ions Formula sodium sulfide Na+, S2– zinc nitrate Zn2+, NO3– aluminium sulfate Al3+, SO4^2– ammonium phosphate NH4+, PO4^3– Question 30
1 mark · Normal
Answer and check →What is the formula for copper(II) nitrate?
- A.Cu(NO3)2
- B.Cu2NO3
- C.CuNO3
- D.(CuNO3)2