Direct characterization is when the author directly tells you a characters traits.
A "strong" acid (or base) is one that dissociates completely in dilute aqueous solution. One which does not is a "weak" acid (or base). An acid with a pKa (or a base with a pKb) lower than about -2 is considered to be a "strong" acid.
Weak acids and bases can still be quite corrosive. HF is a "weak" acid with a pKa of around 3.2 (which corresponds to only about one molecule out of every 38 or so being dissociated), but it's pretty terrible stuff and will dissolve even glass.
HCI (Hydrochloric acid)
1/2 is less than one.
Engineers design new products that you buy. They design everything from bridges to planes to computers.
He gets an invitation to a ball.
The sense that the narrator is addressing a specific person
Katia was going to teach them a lesson they'd never forget.
No way, she thought, this is ridiculous.
a man who is usually honest but occasionally lies (apex) A.
It is often more effective to let the reader figure out what a character is like, rather than telling the reader directly.
Ka= [h+][HCO3-]/[H2CO3]
It shows contrast between the narrators inner thoughts and outward behavior. (APEX)
What does the character want?
savage and war-hungry
sodium hydroxide
HI