USNCO descriptive

Barium flame

Green

When added to strong acids produces explosive gas

NaN3

CH3OH + K2Cr2O7 in H+

Only color change

CuCO3

Green

Cu2+

Blue

AgI

Pale yellow insoluble

Unknown acid formula for purity

Melting point

HBr + CH3NH2

CH3NH3Br

Doesn't need indicator

Permanganate

Co2+

Pale pink

CoCl2

Blue

Solubility - Group 1A and Ammonium

Always

Solubility - Acetates, Nitrates, Perchlorates

Always

Solubility - Halogens

Always except Ag+, Pb2+ (at low temp), Cu+, Hg22+

Solubility - Sulfates

Always except Ca2+, Sr2+, Ba2+, Ag+, Pb2+

Solubility - Hydroxides and Sulfides

Never except 1A, Ca2+, Sr2+, Ba2+

Solubility - Phosphates and Carbonates

Never

Prepare strong acid

Beaker, water, beaker, flask

FeCl3

Dark red

Lithium flame

Red

Sodium flame

Yellow

Potassium flame

Light purple

Rubidium flame

Pink

Calcium flame

Red

M of pure organic solid

Melting point of mixture

Dissolving NH4NO3

Endothermic

CaF2

White

Aluminum in nature

Oxide

Noble gas in atmosphere

Argon

Acid-Base standards

Any except strong bases

Space oxygen

KO2

Ag2CrO4

Red

n-type semiconductor

Doped with more valence e-

p-type semiconductor

Doped with less valence e-

FeCl2

Green

To separate isotopes

Effusion rates

NO2

Dark red, odor

MnO4-

Purple

Cr3+

Green

Zn2+

Colorless

Strontium flame

Red

Fe3+

Yellow

H2SO3

Colorless gas

AgCl

White solid

Quartz SiO2

Network covalent

Ni2+

Green

Alkali metals with water

High reactivity increase down group

PbCl2

White solid

Rocks

CaCO3

SiC

Network covalent

Ag+ reduction

.80 V

Cu2+ reduction

.34 V

Zn2+ reduction

-.76 V

CH4

Colorless, odorless

Cl2

Pale green, odor