Across
- 1. there are five _____ in the periodic table, ex. Fluorine
- 3. the _____ metals are very reactive and have low melting points
- 5. the chemist who formulated the Periodic Law.
- 8. a combination of different qualities, things, or emotions.
- 10. a trait used to describe matter
- 11. a colorless, odorless gas, with an atomic mass of 15
- 13. has the symbol n on the periodic table
- 14. when heat is applied to a solid and the solid starts to become a liquid that is its _______ point.
Down
- 2. the ability of a substance to dissolve in solvent.
- 3. the basic unit of a chemical element
- 4. a state of matter
- 6. On the ______ table are all the elements
- 7. The ____ gases are very low in chemical reactivity
- 9. a substance that is unable to be broken down into any other substance.
- 12. the chemical element with the atomic number 16