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