Electron Configuration

2. Put a list of elements together based on their chemical properties
5. He put the elements in order of atomic mass but he left gaps to keep elements with similar properties in the same vertical groups
6. The smallest part an element divided into using a chemical reaction
9. Has the atomic symbol "0"
10. Made up of 2 or more different elements chemically bonded together
11. He noticed when you arrange elements in order of relative atomic mass, every eight element had similar properties
12. A horizontal row of the periodic table
14. This has zero charge

1. Has the atomic symbol "H"
3. The distribution of electrons of an atom/molecule in atomic or molecular orbitals
4. This has a negative charge
7. A group of atoms chemically bonded together (the atoms may be the same or different)
8. A substance containing identical atoms
12. This has a positive charge
13. A column of elements in the periodic table