Some examples of separation techniques used to remove gangue from ore include gravity separation, magnetic separation, froth flotation, and leaching.

Separation techniques are based on differences in the physical or chemical properties of the gangue and the ore. These differences may include differences in density, particle size, magnetic properties, or solubility.

Gangue must be removed from the ore before metal extraction to obtain a purer form of the metal and improve the efficiency of the extraction process.

Gangue materials are impurities such as soil, sand, and other unwanted substances present in ores mined from the earth.

Yes, metals such as copper and silver are found in nature as both free elements and in combined states as sulphide or oxide ores.

Many metal ores are oxides because oxygen is a very reactive element and is abundant on Earth. The metal ores form as a result of the reaction between metals and oxygen present in the Earth’s crust.

Metals in the middle of the activity series, like zinc (Zn), iron (Fe), lead (Pb), etc., are moderately reactive and are found in the earth’s crust mainly as oxides, sulphides, or carbonates.

Metals at the top of the activity series, such as potassium (K), sodium (Na), calcium (Ca), magnesium (Mg), and aluminum (Al), are so reactive that they are never found in nature as free elements.

Metals found at the bottom of the activity series, such as gold, silver, platinum, and copper, are least reactive and are often found in the free state in nature.

The bonding in ionic compounds is characterized by the transfer of electrons from a metal atom (cation) to a non-metal atom (anion), resulting in the formation of positively and negatively charged ions that are held together by electrostatic forces of ...