Although some words in chemistry are obvious at a glance as to why they are what they are e.g. hydrocarbons are called hydrocarbons because they contain simply carbon and hydrogen, where do we get the chemical words with a less obvious meaning from?
Monomer: the simplest repaet unit.
Mono means one and the Greek meros means part.
Atmosphere: The gases surrouding a planet.
From the Greek where Atmos, meaning Steam/vapor, and spharia meaning spherical.
Aldehyde: an oxidised primary alcohol, it contains the -CHO group.
Abbreviation of modern Latin name alcohol dehydrogenatum.
Ester: the product of the reaction between carboxylic acids and alcohols.
Possibly an abbreviation of the german word Essigäther (ethyl acetate), where Essig means vinegar and Äther means ether.
Titration: a method of chemical analysis
From the french titrer meaning title or standard.
Alkali: a water-soluble base
From the Arabic al-qaliy meaning ashes
Elements: the different types of atom
From the latin elementum which means a matter in its most basic form .
Equation: a formula which equates the reactants in a reaction with the products.
From the latin aequationem which means a community or equal distribution.
A combination of the greek oxys, meaning sharp or acid, and genes, meaning formation or creation. French chemist Antoine-Laurent Lavoisier invented the name oxygène as at the time it was thought that oxygen was vital when it came to forming acids.