Mole Day
Mole Day is held on October 23. It is an holiday celebrated among chemists. This event in the third decade of the month October is annual. 
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Chemists and materials scientists study substances at the atomic and molecular levels and analyze the ways in which the substances interact with one another. They use their knowledge to develop new and improved products and to test the quality of manufactured goods.
Analyze substances and create data. If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass. The only solid elements that assume liquid form at room temperature are bromine and mercury. Unlike many substances, water expands as it freezes.
Antoine-Laurent de Lavoisier (1743–94) is considered the "Father of Modern Chemistry".
Similar holidays and events, festivals and interesting facts
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Earth Creation Day on October 23
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U.S. National Croc Day on October 23
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