Across
- 5. _________ is a silver white material.
- 7. something you use to wash your hair is ____.
- 8. water is the universal _______.
- 10. The negative end of H20 is ________.
- 12. Your bathtub may become ______.
- 14. _____ is another word for H20.
- 15. something that is free of contamination is ____.
Down
- 1. _______ is a soft grey metal.
- 2. Rocks have ________ in them.
- 3. Water that has a high mineral content may be considered _________.
- 4. If you put something into water it may ________.
- 6. crust may get onto a _______.
- 9. _____ is the neutral water point on the acidic scale.
- 11. ______ is something we need breath and need to survive.
- 13. _____ is something that can build up and block pipes.