On 12/04/2021 10:54 am, charles wrote:
In article ,
Andy Burns wrote:
charles wrote:

Steve Walker wrote:

I have long thought it wrong to mark down for spelling and grammar,
except in languages.

In chemisty? Is ita sulphate or a sulphide?

Sulfide or sulfate according to IUPAC

could well be, I never learned chemisty

Learning chemistry also crucially includes learning how to spell the
terms used, many of which are only subtly different from each other.