L7 Ionic Bonding & Formulae (Unit 1 Chemistry BTEC Applied Science)

This editable 67-slide PowerPoint covers ionic bonding, ion formation, giant ionic lattices and writing ionic formulae for Pearson BTEC Applied Science Unit 1 Chemistry. Designed to develop students’ understanding of ionic structures and chemical formulae, the lesson provides clear explanations, diagrams, worked examples and opportunities for independent practice.

The resource introduces the formation of positive ions (cations) and negative ions (anions) through electron loss and gain. Students learn how to predict ionic charges using the periodic table, write electron configurations of common ions and explain ionic bonding as the strong electrostatic attraction between oppositely charged ions. Step-by-step examples demonstrate how to construct dot-and-cross diagrams for ionic compounds.

The lesson then explores giant ionic lattices and how ionic bonding determines the physical properties of ionic substances. Students learn to explain high melting and boiling points, electrical conductivity in solid, molten and aqueous states, solubility in water and brittleness. The effects of ionic charge and ionic radius on the strength of electrostatic attractions are also explored.

Further topics include writing and naming ionic compounds, balancing ionic charges, using the criss-cross method, transition metal ions with variable charges, and polyatomic ions. Worked examples demonstrate how to construct formulae involving brackets, including calcium nitrate and aluminium sulfate.

The PowerPoint includes a five-question starter with answers, clearly defined learning objectives, key scientific vocabulary, detailed diagrams, guided practice activities, exam-style explanations and check-your-understanding questions with answers for self-assessment.

Ideal for classroom teaching, independent learning and revision, this resource supports students studying Pearson BTEC Level 3 Applied Science Unit 1 Chemistry.

File format: Editable PowerPoint (.pptx), 67 slides.

Resource date: October 2026.