Across
- 3. Colour of copper sulphate crystals
- 6. __ changes cannot be reversed
- 8. A feature of chemical change
Down
- 1. A chemical change occurring in human body
- 2. A feature of physical changes
- 4. Its colour turns milky on passing carbon dioxide gas through it
- 5. A method of preventing rusting of iron
- 7. Soda A compound when added to vinegar liberates hydrogen gas