Who`s that Chemist: Difficult Round

In 1896, he began studying the properties of x-rays by using naturally fluorescent minerals. He then did an experiment using potassium uranyl sulfate on photographic plates in which he wrapped the plates in black paper and exposed them to sunlight. He originally thought that the uranium would absorb the sun rays in which would be emitted as x-rays. However, his experiment failed due to overcast skies in Paris. He still developed the plates and in doing so, he discovered that the mineral uranium was indeed emitting radiation without the help of the sun.

This featured chemist’s breakthrough discovery prevented disease and saved lives all over the world. This French chemist’s work in germ theory leads to vaccinations for anthrax and rabies. He became widely recognized when he vaccinated a boy bitten by a rabid dog.

This featured chemist was deeply interested and fascinated with Nitroglycerin- an explosive. He turned nitroglycerine into a commercially usable blasting agent. His work with explosives, unfortunately, caused the death of his younger brother. This event, however, does not stop him from working with explosives. He continued his work and produced dynamite, a safer to handle explosive.

Before he died, he specified in his last will that the bulk of his fortune should use for prizes to those who have conferred the greatest benefit to humankind.

Today its inventor’s name is well known, but more for prizes of peace and of achievement than for explosives.

This featured chemist is involved in the discovery of ten transuranium elements, including an element named after him while he was still alive. As an expert in nuclear chemistry during World War II, he take part in the Manhattan Project, the US research that created nuclear weapons.

Clue:

“Everything is composed of atoms”

Born and reared in the mountainous district of England, was well placed to observe various meteorologic events. His first publication was on color blindness which he had discovered in his and his own brother’s vision.

A Polish-born French physicist, famous for her work on radioactivity She discovered elements polonium and radium. She was twice a winner of the Nobel Prize. With Henri Becquerel and her husband, she was awarded the 1903 Nobel Prize for Physics. She was the sole winner of the 1911 Nobel Prize for Chemistry.

He is regarded as the founder of modern chemistry. He emphasized the importance of conducting experiments in scientific research and was a scientist with outstanding experimental skills. He optimized many scientific instruments and made contributions to many areas of research.. He discovered that at constant temperature, the absolute pressure and the volume of a fixed amount of gas are inversely proportional.

He conducted experiments inside vacuum, and discovered that in vacuum sound could not transmit and a candle could not burn.

Gave preliminary explanation to combustion and metal calcination.

He emphasized on the importance of chemical analysis, invented experimental methods to identify chemicals and measure purity, used vegetable colors to identify acid and base.

Clue:

“Aromatic compounds are benzene based molecules”

He intended to be an architect but convinced to the study of chemistry by the attractive teaching of Justus Liebig. He argued that tetravalent carbon atoms could bond to form “carbon chain” to which other atoms with other valences such as hydrogen, oxygen and chlorine could join.