About this Flash Card Set
13 Cards
by ethan_walsh
Understand acids, bases, pH, and neutralization with clear definitions and everyday examples. Ideal for intro chemistry students.
Front
Acid
Back
A substance that releases hydrogen ions (H⁺) in water. Tastes sour; pH below 7 (e.g., lemon juice, vinegar).
Tags
Front
Base
Back
A substance that releases hydroxide ions (OH⁻) or accepts H⁺. Feels slippery; pH above 7 (e.g., soap, baking soda).
Tags
Front
pH scale
Back
A scale from 0–14 measuring how acidic or basic a solution is. 7 is neutral, below 7 acidic, above 7 basic.
Tags
Front
Neutral pH
Back
A pH of 7 — neither acidic nor basic. Pure water is neutral.
Tags
Front
Neutralization
Back
A reaction between an acid and a base that produces water and a salt.
Tags
Front
Indicator
Back
A substance that changes color depending on pH (e.g., litmus paper: red in acid, blue in base).
Tags
Front
Strong vs. weak acid
Back
A strong acid fully ionizes in water (HCl); a weak acid only partially ionizes (acetic acid).
Tags
Front
Hydrogen ion (H⁺)
Back
A proton released by acids; the higher its concentration, the more acidic (lower pH) the solution.
Tags
Front
Hydroxide ion (OH⁻)
Back
Released by bases; the higher its concentration, the more basic (higher pH) the solution.
Tags
Front
Salt (in chemistry)
Back
An ionic compound formed from the neutralization of an acid and a base (e.g., NaCl from HCl + NaOH).
Tags
Front
Litmus test
Back
Blue litmus turns red in acid; red litmus turns blue in base.
Tags
Front
Everyday acid examples
Back
Citrus fruit (citric acid), vinegar (acetic acid), stomach acid (HCl).
Tags
Front
Everyday base examples
Back
Baking soda, soap, ammonia, antacids.
Tags