Covers the main content from the first chapter of the OCR B A level Chemistry course. This should be done in conjunction with exam question practice, not as a replacement.
| Front | How do you make an ionic equation? |
| Back | Cancel out spectator ions (but only if they're dissolved in solution the whole time, not if they start as a solid and end up aqueous, or vice versa) |
| Front | Why do molecules form the shapes they do? |
| Back | Electron pairs (bonds or lone pairs) around the central atom repel one another so they spread out as far in 3D space as possible. Lone pairs repel more than bonding pairs. |
| Front | Soluble or insoluble? Lead halides |
| Back | Insoluble |