Across
- 4. shell electrons are called_______________ electrons
- 5. Abbreviation for Atomic Mass Units.
- 7. This scientist created the atomic theory
- 8. Atoms are arranged on The Periodic Table of the _____________.
- 9. To find the number of __________: Subtract the atomic number from the atomic mass
- 10. The positively charged particle of an atom.
- 11. A _______________ is a vertical column on The Periodic Table of the Elements
Down
- 1. number, the number of protons and electrons when the atom is balanced; found above the element symbol
- 2. Used a gold foil experiment to help understand the structure of the atom.
- 3. Type of bonding where atoms share electrons
- 6. negatively charged particles