Across
- 5. acids tastes ........
- 6. The acidic or basic nature of a substance is tested by using an ……………… .
- 7. Excessive use of chemical fertilisers make the soil ……………… .
- 9. Where does the word acid come from?
- 10. Products of a neutralisation reaction are always ........and water
- 12. Which acid naturally present in our stomach?
- 14. Name the salt formed when hydrochloric acid reacts with sodium hydroxide solution
- 15. Name one indicator which turns red on adding an acid.
Down
- 1. What is the nature of distilled water?
- 2. Name the reaction when an acid is mixed with base.
- 3. Which acid is injected into our body by an ant sting?
- 4. Phenolphthalein shows .......... colour in bases
- 8. What is the nature of soap solution?
- 11. Which is the most commonly used natural indicator?
- 13. Acids turn blue litmus ……………… .