Across
- 1. have mass.
- 3. of atoms and are located in nucleus,
- 6. the nucleus in orbits and have no
- 7. Protons are positively charged
- 8. particles of atoms and are located
Down
- 2. Neutrons are chargeless particles of
- 4. Electrons are negatively charged
- 5. They are located in nucleus, and have
- 6. smallest part of an element that still has element characteristics