Across
- 2. what do plants need to grow
- 4. what is everything made out off
- 7. a magnetic metal
- 9. this is where you find all the elements
- 12. a ph scale over seven
- 13. what do we need trees for
- 14. can fill a container of any shape
- 15. the chemical letter is O
Down
- 1. what does sea water have in it
- 3. what we find in swimming pools
- 5. what you would use to separate iron fillings with
- 6. the element symbol is Au
- 8. an acid that we can eat
- 10. found on the periodic table
- 11. what can acids be used for