GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

Sylvine ✘ Siderite ✘ Spodumene ✘ Soda ash ✔ NULL ✔ NULL NULL

Bauxite ✘ Chalcopyrites ✘ Elmanite ✘ dolomite ✔ NULL ✔ NULL NULL

Gold ✘ Silver ✘ Copper ✘ Platinum ✔ NULL ✔ NULL NULL

Silica ✘ Carbon ✘ Limestone ✘ CO ✔ NULL ✔ NULL NULL

Smelting ✘ Calcination ✘ Roasting ✘ Cupellation ✔ NULL ✔ NULL NULL

Amalgamation process ✘ Carbon reduction process ✘ Oxidation process ✘ Electrolytic process ✔ NULL ✔ NULL NULL

Zn ✘ Al ✘ Hg ✘ Pb ✔ NULL ✔ NULL NULL

Silver ✘ sodium ✘ Gold ✘ Platinum ✔ NULL ✔ NULL NULL

Suddenly cooling molten zinc ✘ Adding molten zinc to water ✘ Heating zinc to 100-150°C ✘ Dropping molten zinc drop by drop ✔ NULL ✔ NULL NULL

✘ ✘ ✘ ✔ NULL ✔ NULL NULL