-flashcards on all topics 1-10 -has common exam style questions for each paper -for aqa gcse specification
| Front | What happens during secondary treatment? |
| Back | Bacteria are released in the liquid where they aerobically break down harmful micro-organisms and any other organic material. Air is bubbled through the liquid. |
| Front | Formula for atom economy |
| Back | Atom Economy = (Mr of desired products / Mr of all reactants ) x 100 |
| Front | What is an alloy? |
| Back | A mixture of 2 or more elements, where at least 1 is a metal |