https://padlet.com/mohannanasr/exum6w0cb4krh2cp Mohanna Majid en-us 2020-05-20 07:28:02 UTC 2025-11-02 06:13:38 UTC hello@padlet.com mohannanasr https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584198397 - Sir William Henry Perkin,was a British chemist and entrepreneur.
- In 1856, the precocious scientist William Henry Perkin failed in an experiment to synthetically produce quinine, a chemical that helps treat malaria. Instead of quinine, his beakers were left filled with a dirty brown sludge. But something amazing happened when Perkin, who was only 18 at the time, cleaned out those beakers with alcohol. The brown sludge became a bright, rich fuchsia-purple dye. This accident was the first discovery of a synthetic dye, which Perkin named “mauveine.”
- Mauveine was a more permanent stain. And the discovery changed everything, beginning a long chain of chemistry advances that would make bright, inexpensive synthetic color available to the masses.]]> 2020-05-20 07:34:48 UTC https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584198397 mohannanasr https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584241345 Mauveine was also known as aniline purple and Perkin's mauve. It was the first synthetic organic chemical dye, discovered by accident in 1856. The dye turned out to be suitable for silk and other textiles.]]> 2020-05-20 07:56:03 UTC https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584241345 mohannanasr https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584296167 - Heroin was first synthesized in 1874 by Charles Romley Alder Wright, a physics researcher at St. Mary’s Hospital Medical School in London, England. 
- Heroin (like opium and morphine) is made from the resin of poppy plants. Milky, sap-like opium is first removed from the pod of the poppy flower. This opium is refined to make morphine, then further refined into different forms of heroin.]]> 2020-05-20 08:23:41 UTC https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584296167 mohannanasr https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584324608 Heroin is a highly addictive, illegal drug. It is used by millions of addicts around the world who are unable to overcome the urge to continue taking this drug every day of their lives]]> 2020-05-20 08:37:07 UTC https://padlet.com/mohannanasr/exum6w0cb4krh2cp/wish/584324608