name some pioneers in this field.
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where is rubidium found on the periodic table It is the 37th element. what letters are used to represent it? Rb who discovered it? Robert Bunsen and Gustav Kirchhoff who is the former? German chemist which university did he attend? UNANSWERABLE what scientific law did the latter introduce? Kirchhoff's circuit laws, laws of spectroscopy and law of thermochemistry. can you briefly describe the first one? His  first law is that the algebraic sum of currents in a network of conductors meeting at a point (or node) is zero. The second law is that in a closed circuit, the directed sums of the voltages in a closed system is zero. what is the role of any scientist in the same field as the former? They study the composition of matter and its properties, carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms, etc.
Antoine Lavoisier and Dmitri Mendeleev. Antoine Lavoisier and Dmitri Mendeleev UNANSWERABLE
Chemist Chemist
History of chemistry History of chemistry
. Chemistry as we know it today, was invented by Antoine Lavoisier with his law of conservation of mass in 1783. The discoveries of the chemical elements has a long history culminating in the creation of the periodic table by Dmitri Mendeleev.  Chemistry as we know it today, was invented by Antoine Lavoisier with his law of conservation of mass in 1783. The discoveries of the chemical elements has a long history culminating in the creation of the periodic table by Dmitri Mendeleev. 
wiki:1534754
Chemist [SEP] Introduction
A chemist (from Greek "chēm(ía)" alchemy; replacing "chymist" from Medieval Latin "alchimista") is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, reaction rates, and other chemical properties. The word 'chemist' is also used to address Pharmacists in Commonwealth English. Chemists use this knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes.