Atomic Theory

3. This man's experiments provided the first evidence that atoms are made of smaller particles
5. This relationship between elements in compounds is always the same
6. The negatively charged particle in an atom
10. This shows the most likley locations for electrons in an atom
12. This man's experiments focussed on electrons and their positions
13. This exists because an atom can have different number of neutrons

1. The man who created the Gold Foil experiment and theorised that all of an atom's positive charge is concentrated in its nucleus
2. The positively charged particle in the nucleus
4. This number shows the number of electrons in an atom
7. Name of the person who proposed that all elements are composed of atoms
8. James Chadwick designed an experiment to show that these exist
9. The most stable electron configuration
11. Electrons change this level as they gain or lose energies
14. This is the region of space around the nucleus where an electon is likley to be found