Across
- 1. number of protons and neutrons
- 3. where all the elements are organized
- 5. the abbreviation for the chemical name(one letter or more)
- 6. atom that gained or lost an electron
- 8. that cant be broken down
Down
- 2. number of protons
- 4. where the electrons live
- 7. Property of an element that you use your senses to observe (Ex-metals are Shiny)