Across
- 1. Negative charge.
- 2. Has all the element that have been discovered.
- 5. Number of element on Periodic table.
- 7. When something changes physically.
- 9. When two things mix chemically
- 11. Make everything up in the Universe.
- 13. Electrons on most outer Shell.
- 14. No charge.
Down
- 1. Pure substance.
- 3. When something changes chemically.
- 4. Properties of metals and non-metals.
- 6. When two things don't mix chemically.
- 8. Conducts heat and electricity poorly.
- 10. Positive charge.
- 12. Conducts heat and electricity well.