Across
- 3. the type of bonding in a gold ring.
- 6. the type of bonding in table salt (sodium chloride).
- 8. a scientist who suggested that atoms have a positively charged nucleus.
- 11. these elements are often catalysts.
- 13. a type of bonding by sharing electrons.
- 14. the most reactive halogen.
- 15. found on the right hand side of the periodic table.
Down
- 1. the state of a substance at a temperature between its melting and boiling point.
- 2. turning a gas into a solid.
- 4. the least reactive alkali metal.
- 5. the nucleus of an atom contains these.
- 7. the number of electrons shared in an oxygen molecule.
- 9. electrons that are free to move through a metal are said to be?
- 10. an element with 36 protons in its atom.
- 12. this group of the periodic table produces ions with two positive charges.