Across
- 4. distance between points on a continuous wave.
- 5. amount of energy gained or lost by an atom.
- 6. atom with a positive or negative charge.
- 9. charged.
Down
- 1. A equation that shows the atomic number,mass number and sublevel
- 2. substances spontaneously emit radiation.
- 3. has a negative charge.
- 7. that are emitted by radioactive-tive materials.
- 8. electromagnetic radiation with no mass that is a quantum of energy.
- 10. particle with two protons and two neutrons.