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.
- ‘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.’
- ‘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.’
- ‘If a single bond is made by sharing one electron from each atom, each oxygen then has seven electrons, one short of an octet.’
Are you looking for a word for a foolish person? We explore twelve interesting words to describe the dunderheads in your life.
Before you run for the hills, let’s run through a list of ‘run’ expressions that are running through our minds.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.