Categories
Chemistry History

Today in Chemistry History: Robert Bunsen and the Bunsen burner

The Bunsen burner is one of the ubiquitous symbols of chemistry. Though it might be a rarer sight in university laboratories these days, due to some of the highly flammable substances used, they’re still very commonly found in school science classrooms, and for most of us probably bring back memories of school science lessons. As today […]

Categories
Chemistry History

Today in Chemistry History: Ahmed Zewail and femtochemistry

On this day (26 February) in 1946, Egyptian-American chemist Ahmed Zewail was born. Zewail pioneered femtochemistry, the use of laser pulses to see the movement of individual atoms during chemical reactions. This graphic gives an overview of the ultrafast laser spectroscopy that makes this possible.

Categories
Chemistry History Physical Chemistry

Today in Chemistry History: Svante Arrhenius and the Arrhenius equation

Svante Arrhenius was born on this day (19 February) in 1859. He’s famous for his eponymous equation and for suggesting in 1896 that carbon dioxide levels in the atmosphere might affect the Earth’s climate. He also clarified our understanding of solution chemistry and acids and bases.

Categories
Chemistry History General Chemistry

Today in Chemistry History: Søren Sørensen and the pH scale

On this day (9th January) in 1868, Danish chemist Søren Sørensen was born. He’s best known for developing the pH scale, which we’ve likely all encountered, to measure the acidity or alkalinity of solutions. This graphic gives a brief overview of the pH scale and what it means.

Categories
Chemistry History Organic Chemistry

Today in chemistry history: August Kekulé and the structure of benzene

Today marks the anniversary of the birth of August Kekulé, most famous for his proposed structure for the benzene molecule. This graphic looks at his structure and its limitations and shows how later work improved upon his initial proposal.

Categories
Chemistry History Women in Chemistry

International Women’s Day: Twelve women from chemistry history – pt. 3

8 March is International Women’s Day. As in previous years, I’ve put together another edition of this series looking at underappreciated women from chemistry history.