Dicarboxylic acid

These are a type of organic compound. The first six are:

Oxalic Malonic succinic glutaric adipic pimelic

The "common" mnemonic is: Oh my, such great apple pie!

We also came up with:
objective mean sponges grab athletic pajamas
odious mad shepherds gulp airborne peas

Geometric translations

Three main things you can do to a shape:

translation reflection rotation

I can't believe translation really counts as a change, but okay.

Trees reduce religions
Trolls require ranges
Trucks ruin roadblocks

SI Prefixes for numbers less than one

Just in case you want to think about really tiny numbers:

deci centi milli micro nano pioc femto atto zepto yocto

Distasteful cyan moral messy nuggets prune full allergic zealous youths

"Yocto" is 10 to the -24th power, aka one quadrillionth, aka 0.000000000000000000000001. So small, yet still not zero.

Five social institutions

Again, there's not total agreement that there are only five social institutions: mechanisms of social order that effect the behavior of individuals. There might be infinity. But at least there are these:

Family Education Religion Economic Political

Fallen elements record educated paperclips

Layers of sediment in the Grand Canyon

From the bottom up:

Tapeats, Bright Angel, Muav, Redwall, Supai, Hermit, Coconino, Toroweap, Kaibab

Tall broken mad robots strangle huge chilling toxic killers
Tainted boring malodorous ravens smoke horribly creepy thin kitties

Seven sins of memory

From the book The Seven Sins of Memory: How the Mind Forgets and Remembers by Daniel L. Schacter

Fading, absent-mindedness, blocking, misattribution, suggestibility, bias, persistence.

Fast abstract batteries manipulate shadowy boring potatoes.
Filthy amusing bulldogs move square boring peanuts.

Four Bases of DNA

Guanine Thymine Cytosine Adenine (otherwise known as G T C & A).

Great trains crash accordions
Gentle tractors comb anteaters