Across
- 4. the number of protons in the nucleus of an atom
- 7. what you end up with in an equation;after the arrow
- 9. the least reactive family
- 10. a group of elements with similar chemical properties
Down
- 1. the most reactive family
- 2. the number of protons and neutrons added together
- 3. rows of the periodic table
- 5. what you start within an equation;before the arrow
- 6. An abbreviation for a chemical element
- 8. how likely an element is to go through a chemical change