Daily Archives: February 21, 2018

Johannes Nicolaus Brønsted — February 22 is Johannes Brønsted’s birthday. Brønsted was a Danish chemist best known for developing a theory to explain acids and bases at the same time as English chemist Thomas Lowry. The Brønsted-Lowry theory defines acids as any chemical that is able to donate a proton or hydrogen ion to […]

Today in Science History – February 22 – Johannes Brønsted

This entry was posted on February 21, 2018 by Todd Helmenstine (updated on February 22, 2022)

The use of petrochemicals in medicine includes the manufacture of pills, capsules, and disposable syringes. — It’s hard to notice what’s going on around you when you’re injured or sick. You may be surprised at the key role played by petrochemicals in medicine. Some uses are obvious, like plastic tubes and containers. Most uses of petroleum are much harder to see. Petroleum products save doctors and […]

Petrochemicals in Medicine

This entry was posted on February 21, 2018 by Anne Helmenstine (updated on January 1, 2022)