To carry out the tasks mentioned during the extraction of metal from its ore, the following procedures can be used:

1. To change the ore into metallic oxide:
  -Roasting: This is a thermal treatment process where the ore is heated in the presence of oxygen. During roasting, sulfides are converted into oxides, and other impurities may be removed as gases. This process is commonly used for ores like sulfides to convert them into their respective metal oxides, which can then be further reduced to obtain the metal.

2. To separate hydrophilic and hydrophobic substances from the ore:
  -Froth Flotation: This is a method used to separate minerals based on their hydrophobic properties. In this process, the crushed ore is mixed with water and chemicals to create a slurry. Air bubbles are then introduced, causing hydrophobic particles to attach to the bubbles and rise to the surface, forming a froth that can be collected. This technique is effective for separating valuable minerals from gangue based on their surface properties.

These methods are commonly employed in metallurgy to extract metals efficiently from their ores.