Across
- 3. made up of only one type of atom
- 4. element combined with any element
- 9. colour of universal indicator in acid
- 11. positive partials in an atom
- 12. chemical symbol for calcium
- 13. has a ph scale higher than 7
Down
- 1. colour of universal indicator in alkali
- 2. nonmetal
- 3. negative particles in an atom
- 5. measure how acids or alkali substances
- 6. ph scale equal to 7
- 7. colour of universal indicator in neutral
- 8. particles are fixed together
- 10. has a ph scale less than 7
- 14. is smallest parietal of any element