Across
- 2. because an atom is neutral there is an ___ number of protons and electrons
- 5. type of bond where nonmetal bonds with metal
- 7. elements touching the stair step line on periodic table
- 9. columns on the periodic table; also called families
- 10. rows on the periodic table
- 11. type of bond where nonmetal bonds with another nonmetal
- 13. atomic number is the number of
Down
- 1. largest section of the periodic table
- 3. atoms join together to form these
- 4. atomic __ is the total of the protons and neutrons
- 5. when an atom gains or loses a neutron
- 6. in a covalent bond electrons are ___
- 8. the periodic table is arranged in order of ___ atomic number
- 12. when an atom gains or loses an electron