Molecular Structure & Bonding
📋 What it is
Atoms bond into molecules by sharing or transferring electrons; the recipe decides the substance.
🗣️ Coach says
Atoms rarely go solo — they bond into molecules to become stable. They either share electrons (covalent) or hand them over (ionic). The exact recipe matters: H₂O is water, but H₂O₂ (one extra oxygen) is hydrogen peroxide, a totally different substance.
🧠 Memory hook
Atoms bond by sharing or giving electrons. Change the recipe, change the substance.
😂 Giggle
What's a chemist's favorite tree?
A chemis-tree!
😲 Whoa!
Diamond and graphite (pencil “lead”) are made of the EXACT same atom — carbon. The only difference is how the atoms are bonded together.
✅ Quick check: Water is H₂O and hydrogen peroxide is H₂O₂. Why are they so different?
Say your answer out loud first — then reveal.
One extra oxygen atom changes the molecule’s structure and behaviour — the recipe of atoms determines the substance.
A molecule’s identity depends on which atoms bond and how.
🧪 Try it! (2 minutes)
Build a water molecule from clay/paper: two small balls (hydrogen) stuck to one big ball (oxygen).