Chaim Azriel Weizmann, was a Zionist leader, President of the World Zionist Organization, and the first President of the State of Israel. He was elected on 1 February 1949, and served until his death in 1952. Weizmann was also a chemist who developed a new process of producing acetone through bacterial fermentation. He founded the Weizmann Institute of Science in Rehovot, Israel.