Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Calcium chloride
19 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →Draw a dot-and-cross diagram to represent the ionic bonding in lithium fluoride.
Question 2
4 marks · Normal
Answer and see the solution →Calcium chloride is an ionic compound formed from calcium and chlorine.
(a)[1 mark]State the formula of the calcium ion and the chloride ion.
(b)[2 marks]Draw a dot-and-cross diagram to show how electrons are transferred when calcium reacts with chlorine to form calcium chloride.
(c)[1 mark]Explain why two chlorine atoms are needed for each calcium atom in this compound.
Question 3
2 marks · Normal
Answer and see the solution →Lithium fluoride forms when lithium reacts with fluorine. Draw a dot-and-cross diagram to show the ions present in lithium fluoride after the ionic bond has formed.
Question 4
3 marks · Normal
Answer and see the solution →(a) Lithium fluoride is formed when a lithium atom reacts with a fluorine atom. Each atom transfers electrons to form ions.
Draw a dot-and-cross diagram to show the ionic bonding in lithium fluoride. Label each ion clearly and show the charges.
Question 5
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 6
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 7
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 8
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.