Medieval scientists and philosophers called alchemists were the predecessors of modem-day chemists. Many of them tried to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.
More about Medieval scientists
If you want to work on the history of medieval science you need to think about whether you will want, firstly, to work specifically on astronomy, medicine, geometry, arithmetic, the mathematical and theoretical aspects of music, epistemology, cosmology and so on.