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Flashcards in Lab Final Deck (11):
1

Acid

donates a proton
dissolves to produce H+ in solution
acidic solution contains H+ ions and - ions

2

Base

accepts a proton
dissolves to produce OH- in solution
contains OH- and positive ions

3

Chemical reaction

the combining and or breaking apart of matter to form new types of matter.

4

Ionic

crystalline solids with orderly geometric arrangement
soluble in water
substantial bonds between charged atoms or molecules
table salt NaCl

5

Covalent

dominated by bonds sharing of electrons
typically are not soluble in water
generally liquids or gases at room temp and atmospheric pressure
alcohol

6

Hard Water

concentration of calcium or magnesium ions greater than 75 ppm

7

Electrolyte

compound that dissolves in water to form a solution with elevated electrical conductivity

8

Buffer

used to prevent changes in Ph

9

Indicator

substance that changes color to indicate the presence of some ion or substance

10

EDTA

chelating agent--attracts metals

11

5 mystery powder reagents

tincture of iodine phenolphthalein white vinegar rubbing alcohol (70%) sodium hydroxide (.3M)