SHS1 Chemistry · Semester 2 Week 11: Bonding

Lesson notes

Learning Objectives

Indicator: 1.2.2.LI.1 - Explain ionic bonding, its formation and state the properties of ionic compounds.

By the end of the lesson, learners can:

Define ionic bonding as the electrostatic force of attraction between oppositely charged ions formed when a metal transfers electrons to a non-metal.
Explain the factors that affect ionic bond formation, including ionization energy, electron affinity, electronegativity difference and lattice energy.
Use electron dot diagrams to illustrate the formation of cations from metals and anions from non-metals, and relate the charge on simple ions to the group number of the element on the periodic table.
Use electron dot diagrams and models to describe the formation of ionic bonds between metals and non-metals, including the formation of sodium chloride (NaCl).
State and explain the characteristic properties of ionic compounds, including high melting and boiling points, electrical conductivity in molten and aqueous states, solubility in water and hardness.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Systematic Chemistry of the Elements (Strand 2)
Sub-strand: Bonding (2.2)
Content standard: 1.2.2.CS.1 - Demonstrate knowledge and understand of the formation and properties of inter-atomic bonding. 1.2.2.LO.1 Predict and explain ionic, covalent and metallic bonding as well as their characteristic properties. 1.2.2.LO.2 Predict and describe the type of intermolecular bonds that will be formed between a group of compounds
Indicator: 1.2.2.LI.1 - Explain ionic bonding, its formation and state the properties of ionic compounds.
Suggested placement: Semester 2, Week 11 (Week 31 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 50

Exemplars (from the NaCCA curriculum)

Talk for Learning:
- Review the meaning of chemical bonding and the types of interatomic bonding (ionic, covalent and metallic) from JHS curriculum.
- Discuss the factors that affect ionic bond formation (ionization energy, electron affinity, electronegativity difference and lattice energy).
- Using illustrations, explain the formation of cations and anions and relate the charge on simple ions to the group number of the element on the periodic table.
Activity-Based Learning: In mixed ability groups,
- Use atomic models or simulations or electron dots to describe and explain the formation of ionic bonds between metals and non-metals.
- Use models to illustrate and describe the formation of Sodium chloride crystals.
- Discuss the properties of ionic compounds.
Teaching and Learning Materials:
- WEBSITES * https://study.com/academy/lesson/cation-definition-examples-quiz.html atomic models, https://www.khanacademy.org/science/in-in-class-10-chemistry-india/x87dd2847d57ee419:in-in-metals-and-non- metals/x87dd2847d57ee419:in-in-metals-reacting-with-nonmetals/v/ionic-bonds-reaction-of-metals-non-metals-metals- and-non-metals-chemistry-khan-academy * atomic models, diagrams https://www.khanacademy.org/science/in-in-class-10-chemistry-india/x87dd2847d57ee419:in- in-carbon-and-its-compounds-coming-soon/x87dd2847d57ee419:in-in-bonding-in-carbon-covalent-bond/v/covalent- bond-and-lewis-dot-structure-h2o-co2-chemistry-khan-academy
- CHARTS * Chart on ionic, covalent and metallic bonds
- diagrams
Assessment (1.2.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.