Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A chemical bond in which one pair of electrons is shared between two atoms.
- ‘A carbon atom with two single bonds and one double bond carries a valence of four.’
- ‘Like other hydrocarbons with double bonds, addition reactions can occur to change the double bonds to single bonds.’
- ‘In the nitro group, the central nitrogen atom is involved in both a double bond and a single bond.’
- ‘The porphyrin ring is unsaturated, having alternating carbon-carbon single bonds and double bonds throughout the ring.’
- ‘If a single bond is made by sharing one electron from each atom, each oxygen then has seven electrons, one short of an octet.’
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.