CourseCourseConceptConceptDocumentDocument

IB Chemistry SL 2.1 The Ionic Model Questions

Practise ion formation, charge-balanced formulae and how ionic lattices account for bonding, conductivity and other material properties in IB Chemistry 2.1.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Predict electron transfer and the charge formed when metals lose or non-metals gain electrons.
  • Deduce names and neutral formulae by balancing monatomic or polyatomic ion charges.
  • Describe ionic attraction and distinguish it from covalent bonds within polyatomic ions.
  • Represent giant ionic lattices and explain melting, brittleness and conductivity from ion arrangement and mobility.
  • Compare ionic and molecular substances using their solubility and structure-property evidence.

Covered syllabus points

2.1.1—Ion formation2.1.2—Ionic bonding2.1.3—Ionic compounds

Question 1

[Maximum number: 1]

How many electrons will be gained or lost when the element with electron configuration 1s22s22p31 s^{2} 2 s^{2} 2 p^{3} forms an ionic bond?

A

Two electrons lost

B

Two electrons gained

C

Three electrons lost

D

Three electrons gained

Question 2

[Maximum number: 2]

Iron may be extracted from iron (II) sulfide, FeS.

Iron (II) sulfide, FeS , is ionically bonded.

Describe the bonding in this type of solid.

Question 3

[Maximum number: 3]

Periodic trends enable chemists to predict the behaviour of related compounds.

Na2O\quad \mathrm{Na}_{2} \mathrm{O} and SO3\mathrm{SO}_{3} are two oxides of period 3 elements.

Na2O\quad \mathrm{Na}_{2} \mathrm{O} does not conduct electricity in the solid state but it does when molten. Pure SO3\mathrm{SO}_{3} does not conduct electricity in either the solid or liquid states. Explain these facts.

All question bank results loaded