Prof. Dr. Thorsten Jungmann (last updated 2026-10-05)

Ideally, you have learned the following concepts at school and can apply them confidently:

  • Periodic table of the elements
  • Atomic model
  • Energy levels
  • Redox reactions

Important!

If you know of or notice any gaps here, acquire the missing competences urgently and very soon in order to avoid problems!

Periodic table of the elements

Periodic table of the elements in 18 groups and 7 periods with the lanthanides and actinides below, each tile showing atomic number, symbol, name and class; metals are coloured pink, metalloids yellow and nonmetals green.
Source: PubChem, Periodic Table of Elements