Chemical Formula (Covalent ) – Simple & Easy

Title:
How to Write Chemical Formula (Covalent Compounds) – Simple & Easy
Description:
This PowerPoint presentation provides a clear, step-by-step guide to writing chemical formulas for covalent compounds, tailored specifically for IGCSE Chemistry students. It’s ideal for classroom teaching, independent learning, or exam revision.
What’s covered:
• What chemical formulas are and why scientists use them
• Examples of common covalent compounds (e.g., CO, CO₂, O₂, NaCl – for comparison)
• How to write formulas from names (e.g., carbon dioxide → CO₂)
• How to name covalent compounds using prefixes (mono, di, tri, tetra, penta, etc.)
• Learning check activities with fill-in-the-blank naming exercises
• Diatomic elements explained with the mnemonic: “I Have No BRight Or CLever Friends” (I₂, H₂, N₂, Br₂, O₂, Cl₂, F₂)
• Special common substances to memorise: NH₃, H₂O₂, CH₄, O₃, H₂O