Ideas in this flowchart

• Acetylene Molecular Structure
• Molecular Composition
• Two Carbon Atoms
• Two Hydrogen Atoms
• Linear Arrangement
• Hybridisation Process
• SP Hybridisation
• Electron Promotion
• Hybrid Orbital Formation
• Bonding Process
• Carbon-Carbon Sigma Bond
• Pi Bond Formation
• Carbon-Hydrogen Sigma Bonds
• Unique Bonding Structure
• Linear Shape
• Chemical Reactivity
• Addition and Polymerisation
• Comparison with Other Molecules
• Methane - Tetrahedral
• Ethylene - Trigonal Planar