Across
- 1. - Central core of an atom.
- 2. - To cause something to change direction, often related to particles in an experiment.
- 4. - Positively charged particle in an atom's nucleus.
- 5. - A region of space where an electron is likely to be found.
- 7. - A negatively charged ion.
- 8. - An atom or molecule with a net electric charge.
- 11. - The relative amount of a particular isotope.
Down
- 1. - A subatomic particle with no charge.
- 3. - Negatively charged particle that orbits the nucleus.
- 6. - Atoms of the same element with different numbers of neutrons.
- 9. Level - The fixed amount of energy that a system can have.
- 10. Number - The total number of protons and neutrons in an atomic nucleus.
- 11. - Basic unit of a chemical element.
- 12. - A positively charged ion.