Across
- 2. -Atomic Mass Unit The standard unit used to measure atomic masses.
- 5. -The general term for energy emitted by radioactive materials.
- 7. -A property of particles that determines their electromagnetic interaction.
- 9. -High-energy electromagnetic radiation.
- 11. - The antiparticle of an electron.
- 15. -Negatively charged particle orbiting the nucleus.
- 17. -The principle stating that total nucleon number and charge remain the same in nuclear reactions.
- 18. -Radiation consisting of high-speed electrons or positrons.
- 19. -The process of removing an electron from an atom, creating a charged particle.
- 20. -The small, dense core of an atom.
- 22. -Particle produced during beta-minus decay.
- 24. -Radiation consisting of two protons and two neutrons.
- 27. -Neutral particle in the nucleus.
- 28. -Particle produced during beta-plus decay.
- 29. -The process of a nucleus releasing radiation.
- 30. -The time taken for half the radioactive nuclei in a sample to decay.
Down
- 1. -Scientist who conducted the gold foil experiment.
- 3. -The joining of two small nuclei to form a larger one, releasing energy.
- 4. -The deflection of alpha particles in an experiment proving the existence of the nucleus.
- 6. -The process of an atom taking in energy.
- 8. -The splitting of a large nucleus into smaller ones, releasing energy.
- 10. -A particle with the same mass but opposite charge as its counterpart.
- 12. -General term for protons and neutrons.
- 13. -Number Another term for proton number.
- 14. -Positively charged particle in the nucleus.
- 16. -Term used to describe unstable elements that emit radiation.
- 21. -Number Another term for nucleon number.
- 23. -The path electrons follow around the nucleus.
- 25. -Atoms of the same element with different numbers of neutrons.
- 26. - The process by which unstable nuclei release energy.