Terminology Guide — printable binder packet

Bright Minds Chemistry · Course Pack

Terminology Guide — The Construction Kit

Reference

v0.1 · Page 1 of 2

Chemistry vocabulary is not a random pile of words to be hauled into memory one at a time — it is a construction kit. Nearly every technical term is built from a small set of Greek and Latin parts snapped together. Know that exo- means out and -thermic means heat, and exothermic announces itself — no more confusing endo- and exo- on a test. Memorizing words is linear; learning roots is exponential — thirty parts unlock several hundred words.

The habit that scales

Keep a running roots-and-symbols page at the back of the lab notebook; add to it every time a new prefix, suffix, or element symbol appears. When you hit an unfamiliar term, break it apart out loud and guess the meaning before you look it up — that retrieval is what fixes the part in memory.

The core roots

Part	Meaning	Example & what it tells you
endo-	inward, absorbing	endothermic — absorbs heat (feels cold).
exo-	outward, releasing	exothermic — releases heat (feels warm).
-thermic / thermo-	heat	thermochemistry — anything to do with heat.
-lysis / -lytic	breaking, splitting	electrolysis splits a compound using current.
hydro- / -hydr-	water	anhydrous = a salt without water.
an- / a-	without, not	anhydrous — absence of water.
electro-	electricity, charge	electrolyte conducts because it has free ions.
-lyte	dissolvable	electrolyte — splits into ions in solution.
cat- / cata-	down	cation moves to the cathode — “cat-ion is paws-itive.”
ana- / an-	up	anion is negative, moves toward the anode.
iso-	equal, same	isotope — same proton number, different mass.

Terminology Guide · continued

Core Roots, Continued & Unit Clusters

Reference

v0.1 · Page 2 of 2

Part	Meaning	Example & what it tells you
-tope	place	isotope — same place on the periodic table.
-mer / poly-	part / many	polymer — many monomers joined.
mono-, di-, tri-, tetra-	1, 2, 3, 4	carbon dioxide has two oxygens.
-ide	simple anion	chloride is Cl⁻.
-ate / -ite	oxygen anion	“-ate” has more O than “-ite” (sulfate vs sulfite).
-ous / -ic	lower / higher charge	ferric (Fe³⁺) is higher than ferrous (Fe²⁺).
per- / hypo-	most / least O	perchlorate has the most O; hypochlorite the fewest.
stoichio-	element, measure	stoichiometry — the ratios in which substances react.
-philic / -phobic	loving / fearing	hydrophobic things repel water.

High-value clusters by unit

Atomic structure & periodic table — iso-, -tope, electro-. Isotope, electron, and electronegativity become a connected web.
Bonding & nomenclature — -ide, -ate/-ite, -ous/-ic, mono-/di-/tri-, hypo-/per-. Name hundreds of compounds without a chart — the suffix tells you the charge and oxygen count.
Energy & reactions — endo-, exo-, -thermic, thermo-, cat- (catalyst). The endo/exo contrast tells you which way heat flows.
Solutions & electrochemistry — electro-, -lysis, -lyte, cat-/an-, hydro-/an-. Electrolyte, cation, anion, cathode, anode, hydrate — all tie back to charge and water.

How to actually use this

Don’t swallow the table in one sitting. Keep this page open during reading and lab; each time you meet an unfamiliar term, name the parts, guess the meaning, then check. The habit leaves your effort free for the part of chemistry that actually rewards it — the problem-solving.