1. Copper ore is mined and crushed.
2. It must be processed to remove the useful mineral or element.
3. Smelting is the process used to obtain copper. In the smelting the ore is melted and material are removed. After smelting, the copper is refined ,or purified.
4. Then it is made into many types of products used in homes, businesses, and industry.
Oxygen reacts with the copper in the penny, the copper oxidizes and it turns green. The Statue of liberty is made of copper. Over the century, it reacted with oxygen and turned green. This is a chemical change.
steel is an alloy of iron and about 0.1%-0.3% carbon. bronze is an alloy of copper+ tin....( not steel)
It is naturally hygienic that slows down the growth of germs.
It is good because it conducts heat. Its useful for making jam.
Polypropylene is a strong and flexible plastic, useful in the manufacture of many products, including containers, twine, etc.
they are more useful because they have more copper inside .
Pure copper is actually quite useful for certain purposes, such as wiring, but alloys such as brass and bronze are stronger than copper.
Electrolysis.
Wood is a very useful product. It can be used to build structures, burned for fuel, or turned into other products like paper, art, and tools.
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You turned to an older artist to become his apprentice. Usually you had to pay him for this until you had learned enough to be a useful assistant.
electrolysis
useful management information
when is the estimation of product is a useful tool
maybe copper
Copper mining produces copper, a very useful element. I also provides jobs and a lot of tax money for the government.
Copper can be refined by electrorefinning.