Across
- 1. measure of how acidic or basic something is
- 4. acid found in car batteries
- 7. substance that shows whether something is acid or base
- 10. acid found in apples
- 11. taste sour
- 12. neither acidic or basic
- 13. shows red for acid and blue for base
Down
- 2. acid found in the stomach
- 3. acid found in oranges and lemons
- 5. acid found in yoghurt
- 6. indicator with a range of colours depending on pH
- 8. acid found in grapes
- 9. acid opposites