Across
- 1. a table of chemical elements aranged in a certain order
- 4. an area of science that studies the properties and behavior
- 7. where things are in the atom
- 8. the small dense region consisting of protons and neutrons
- 9. the electrical attraction between a negative ion and positive ion
- 13. can bond with other atoms
Down
- 2. a substance that cannot be broken down more simply
- 3. the unequal sharing of electrons between atoms
- 5. character that represents the elements
- 6. columns have the same number of electrons on the outer orbital
- 10. a pair of electrons shared by two atoms
- 11. rows that have the same number of atomic orbitals
- 12. the total mass of protons and neutrons
- 14. Basic unit of a chemical element