Across
- 2. a negative ion
- 3. a positive ion
- 5. the one or two letters that's shorthand way of writing an element's name
- 8. an atom with same number of protons and electrons but different amount of neutrons
- 9. an element that is right of the zig zag line on the periodic table
- 10. horizontal rows in the periodic table are called
Down
- 1. vertical columns in the periodic table are called
- 2. metals in the first column of the periodic table are called _________ metals
- 4. the center of the atom that holds the protons and neutrons
- 6. the group that includes fluorine and chlorine
- 7. elements touching the zig zag on the periodic table
- 8. a charged atom is called