Across
- 2. This man's experiments provided the first evidence that atoms are made of smaller particles
- 4. The negatively charged particle in an atom
- 8. The most stable electron configuration
- 10. James Chadwick designed an experiment to show that these exist
- 12. The positively charged particle in the nucleus
- 13. This man's experiments focussed on electrons and their positions
Down
- 1. The man who created the Gold Foil experiment and theorised that all of an atom's positive charge is concentrated in its nucleus
- 3. This shows the most likley locations for electrons in an atom
- 4. Electrons change this level as they gain or lose energies
- 5. This is the region of space around the nucleus where an electon is likley to be found
- 6. Name of the person who proposed that all elements are composed of atoms
- 7. This number shows the number of electrons in an atom
- 9. This exists because an atom can have different number of neutrons
- 11. This relationship between elements in compounds is always the same