2007-10-18 08:40:00 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Most metals occur in nature as compounds, chemically combined with other elements. These are known as minerals. (note: some metals like gold, silver, and copper can be found in their pure form in nature.) Minerals often occur as crystals in rocks. Rocks are mixtures of minerals. If there is enough of a particular metal in a type of rock that it is economic to extract, then the rock (or mineral) is called an ore of that metal.
2007-10-19 16:28:53 · answer #1 · answered by Metallic stuff 7 · 1⤊ 0⤋
For the most part, because they have been oxidized to a combined state, the ore, or they were never reduced to the metal. Actually, gold and platinum "ores" have the metals in elemental form. This is because they are so unreactive and easily revert to metal. Refining these ores involves separating metal from dross.
2007-10-18 08:47:28 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
Metals are comparatively reactive elements and therefore will react with elements in the air, water and earth around them through a variety of processes, producing the ores.
2007-10-18 08:47:11 · answer #3 · answered by lil miss sunshine 2 · 0⤊ 0⤋
Metals, except the Noble Metals, are too reactive to remain as elements in nature. Upon the cooling of the earth, they reacted with the nonmetallic material around them.
2007-10-18 08:45:59 · answer #4 · answered by papastolte 6 · 0⤊ 0⤋
just do a practical.... melt a candle and add some dust to the melt wax... then let it become hard again after cooling...
Then think and analyze your Questin... u will get ur answer...?
Got It?
No?
Here is the explanation....
Metals are in liquid form i.e. due to heavy heat they melt and are added to the surrounding metals,particles etc... thus they are found in the form of ores....
2007-10-22 08:41:00 · answer #5 · answered by Pranaya Chaudhary 1 · 0⤊ 0⤋
Bcuz God made it to be like that.
2007-10-18 08:53:22 · answer #6 · answered by haile d 3 · 0⤊ 2⤋