IGCSE Chemistry

13:32 Topic 1 States of Matter Sit in a room while someone makes coffee next door. Soon you can smell it, even from across the room. Ho… 16:46 Topic 2 Atoms & Bonding Look at these two things. A diamond — the hardest material you can buy. And the soft, grey lead in a pen… 15:33 Topic 3 Stoichiometry Here is a chemist's problem. A single atom is far too small to see, and there are billions upon billions… 10:25 Topic 4 Electrolysis Electricity can do something amazing: it can tear a compound apart. Pass a current through a melted or d… 5:51 Topic 5 Energetics Snap a glow stick, and it lights up. Hold a hand-warmer, and it gets hot. Open an instant cold pack, and… 15:53 Topic 6 Rates & Equilibrium Milk on the counter spoils in a day. In the fridge, it lasts a week. Same milk — but the reaction runs a… 13:06 Topic 7 Acids, Bases & Salts Lemon juice, vinegar, and the acid in your stomach — acids are everywhere. So are their opposites: alkal… 11:15 Topic 8 The Periodic Table This is the most powerful chart in all of chemistry: the Periodic Table. It looks like a jumble of boxes… 13:43 Topic 9 Metals Why do we dig gold out of the ground as shiny nuggets, but iron only as dull, rusty rock? And why does a… 10:40 Topic 10 Chemistry of the Environment Look at a glass of water, and the air in this room. Both look clean and simple. But natural water carrie… 16:50 Topic 11 Organic Chemistry Petrol, plastic bottles, vinegar, alcohol, and the proteins in your body. They seem completely unrelated… 13:26 Topic 12 Experimental Techniques You are handed an unknown white powder and a colourless solution. No labels. How do you find out what th…