Across
- 2. Particles Electrons that come from the nucleius when a neutron changes into a proton.
- 4. Molecules that make up genetic instruction, which is a hereditary material for organisms living on this planet
- 5. Particles that do not seem to be made of anything
- 7. Number Tells you how many protons there are in an element
- 9. Decay The process by which a nucleus of an unstable atom loses energy by emitting ionizing radiation.
- 10. The most fundamental particle we know
Down
- 1. Chart What tells you a lot about n and p in elements?
- 3. Number The total number of protons and neutrons in an atomic nucleus.
- 6. and Protons Particles that are 1800 times as massive as an electron
- 8. Rays Rays that are emitted from the nucleus of some unstable (radioactive) atoms.