Chemical Powder Appearances

No. Chemical Name Appearance Visual

1 Zn Zinc Gray or bluish-gray powder

2 ZnO Zinc oxide White solid

3 Pb Lead Solid, gray with bluish

4 PbO Lead (II) oxide; or

Lead monoxide

Red or yellow powder

5 PbO2 Lead (IV) oxide; or

Lead dioxide; or

Plumbic oxide

Dark-brown, black powder

6 Pb3O4 Lead (II,IV) oxide; or

Minium; or

Read lead; or

Tripumblic tetroxide

Vivid orange crystals

7 Cd Cadmium Bluish-silver lustrous metal

8 CdO Cadmium oxide Colorless powder (alpha form)

Red-brown crystal (beta form)

9 CdS Cadmium sulfide Yellow-orange to brown solid

10 Fe Iron Solid metallic powder: Black to

grey

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11 FeO Iron (II) oxide; or

Wustite

Black crystals

12 Fe2O3 Iron (III) oxide; or

Ferric oxide; or

Hematite

Red-brown solid

13 Fe3O4 Iron (II,III) oxide; or

Magnetite

Solid black powder

14 Cu Copper Red-orange metallic luster

15 CuO Copper (II) oxide; or

Cupric oxide

Black to brown powder

16 Cu2O Copper (I) oxide; or

Cuprous oxide

Brownish-red solid

17 Al Aluminum powder Silver gray metallic

18 Al2O3 Aluminum oxide; or

Alumina

White crystalline powder