Question

What is the difference between smelting and electrolysis?

How can mining contribute to acid rain?

Answer 1

Answer:

Process. Smelting involves more than just melting the metal out of its ore. ... To extract the metal, workers must make these compounds undergo a chemical reaction. Smelting therefore consists of using suitable reducing substances that combine with those oxidizing elements to free the metal.

At metal mines, the target ore (like gold, silver, copper, etc) is often rich in sulfide minerals. When the mining process exposes the sulfides to water and air, together they react to form sulfuric acid. This acid can dissolve other harmful metals and metalloids (like arsenic) from the surrounding rock.

Answer 2

Explanation:

1) What is the difference between smelting and electrolysis?

A) Process. Smelting involves more than just melting the metal out of its ore. ... To extract the metal, workers must make these compounds undergo a chemical reaction. Smelting therefore consists of using suitable reducing substances that combine with those oxidizing elements to free the metal.

2) How can mining contribute to acid rain?

A) At metal mines, the target ore (like gold, silver, copper, etc) is often rich in sulfide minerals. When the mining process exposes the sulfides to water and air, together they react to form sulfuric acid. This acid can dissolve other harmful metals and metalloids (like arsenic) from the surrounding rock.

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