Anders Ekeberg discovered the element tantalum despite being partially sighted and deaf; answer to Guess the Chemist (14)

Theodore W. Richards provided accurate masses for 30 elements, the first experimental evidence of isotopes; answer to Guess the Chemist (13)

Dynamite was invented by Alfred Nobel after an accident at a nitroglycerin factory killed his brother; answer to Guess the Chemist (11)

Blaise Pascal contested the idea that nature abhors a vacuum and is the answer to Guess the Chemist (8)

Celebrating the life of A. Martin, pioneer of partition chromatography and answer to Guess the Chemist (7), on the anniversary of his death

X-ray diffraction proved that X-rays are waves and the space lattice theory of crystals. Its discoverer is the answer to Guess the Chemist (6)

Herbert C. Brown won the Nobel Prize for his work on organoboranes and hydroboration; also the answer to Guess the Chemist (5)

Louis Pasteur, invented pasteurization and proved the germ theory of disease. He is also the answer to Guess the Chemist (4)

Priestley's great discoveries, including oxygen and other gases, electricity, and soda water, as well as his holding on to old chemical beliefs

African-American chemist worked on the development of an effective pertussis vaccine