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Many of the metals that humans use come from ores. For example the iron used to make steel comes from the the mineral hematite, lead for batteries is produced from galena, and the magnesium used in vitamins comes from dolomite. Ores of these useful metals must be extracted from Earth in a process called mining.
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Chemical formula of gold's ores?
Gold generally is found in its elementary state, so it has no ores
Copper can be obtained from its ores by smelting true or false?
well i guess it can so... TRUE?!
Is most metals reactive.?
It is not true; some metals are not so reactive and noble metals are practically unreactive.
How do you differentiate metals from non metals?
Metals usually have a characteristic lustre, so you can often tell just by looking. The metals conduct electricity when solid, and non-metals, with the exception of graphite, do not. Metals react with oxygen to give basic oxides, whereas non-metals give acidic oxides.
Are non-metals flexible?
No, non-metals are not malleable simply because of the way the atoms are arranged. In metals the atoms are arranged so they will just slide past each other but in non-metals the atoms are arranged differently so they on't just slide past each other.
Are transition metals often found in ores?
Quick and simple answer is that metals are solid and therefore are affected by the gravity of the Earth more than gases. Therefore gases are in the air and solids are on the surface or under the surface of the Earth.
What physical and chemical properties are used to separate metals from their ores?
Some impurities ,or unwanted substances ,are less dense than water ,so they float in water and can be washed away.Others ,like sulfur ,can be burned away.
Why are ores so important?
because we need it to make our steel or cement
Why will using so much copper be a problem in the future?
in the future, there may be no copper ores left so other metals will need to be used, however other metals are more reactive than copper, so will eventually dissolve
What are the two most important alkali metals Why are they so important?
Sodium and Potassium.
Why is the reactivity series important when extracting metals from ores?
By knowing the reactivity series of elements, we can tell which elements will displace each other. So to extract a metal from an ore, you need to use an element higher up in the reactivity series, so that the metal will be replaced by the other element, and you are left with a more pure form of the metal.
What are the uses of ORe?
Ore, as in rocks which contain sufficient metal to extract and it is economical to do so. Ores include bauxite, a copper ore. Ores can be used to extract precious metals which in turn can be used for electrical wiring, in the case of copper or as a catalyst, in the case of Haematite, Iron ore (the haber process).
Chemical formula of gold's ores?
Gold generally is found in its elementary state, so it has no ores
Where are ores found?
Mined of metal ores depend on the position of the metal in electrochemical or activity series but metals can be extract through electrolysis and reduction process.
Why is copper so speical?
Its easy to refine so it was one of the first metals known to mankind. Its a great conductor of electricity its easy to work including being maleable so it can be formed into tubes to be used in plumbing.
Why all ores are minerals but all minerals are not ores?
It is so because metals cannot be extracted from minerals in a convenient way. E.g.:- Aluminum metal is found in both minerals: clay and bauxite. Aluminum metal is extracted only from bauxite in a convenient way. So, bauxite is an ore of aluminum. On the other hand, it is not extracted from clay so clay remains only as mineral not ore of aluminum.
Alloys cannot be made on earth?
The impossibility of making alloys on Earth would come as a great surprize to bell makers, silversmiths, iron and steel workers, jewellery shops, electronics manufacturers and many more. Alloy manufacturing and formulation is a common practice in metallurgy. Almost all metals in today's world are not pure elements but mixtures of metals meant to enhance appearance, serviceability, hardness or electrical and chemical properties.In the native state (ores) most metals are alloys containing several components, so mankind's direction is not needed to create these materials.
