· C1a - Lesson 2 - Metal . ppt, 851 KB. Taboo - C1a metal . About this resource. Info. Created: Feb 13, 2011. Updated: Nov 1, 2011. ppt, 6 MB. C1a - Lesson 2 - Metal . ppt, 851 KB. Taboo - C1a metal . Report a problem. This resource is designed for UK teachers
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· : A mineral containing a high percentage of metal from which the metal can be profitably is called an . Ex: Copper glance Cu 2 S, Haematite Fe 2 O 3. may be divided into four groups. Native : These contain the metal in free state eg. Silver gold etcread more
· To extract gold from its ore, the is treated with sodium cyanide solution in the presence of oxygen and water. 4 Aus + 8 NaCNaq + O2g + 2 H2Ol 4 NaAuCN2aq + 4 NaOHaq a Determine the mass of gold that can be . chemistryread more
· Extraction of Iron from its ores Extraction of iron or its metallurgy is the process of obtaining this metal in a form where it can be put to practical use, and this process of extraction consists of three stages: Ore dressing, Reduction of ores and Iron production. Extraction of Iron from its oresread more
· Pour the acid-and-bleach mixture into the plastic bowl with the grains and stir. Allow four hours for the gold to dissolve, stirring every 20 minutes. The chlorine reacts with the gold inside the to form gold chloride. Filter the and bleach solution toread more
is mined and extracted from copper ores. To extract the metal from the ore, the rock is melted at a temperature greater than 900°C, which requires a lot of energy. Extracting metal from rock is so energy intensive that if you recycle just 40 aluminum cans, you will save the energy equivalent ofread more
· copper from copper oxide
a Transfer one spatula measure of copperII oxide to a hard glass test-tube.
b Carefully add one spatula of charcoal powder on top of the copper oxide without any mixing.
c Strongly heat these two layers for five minutes in a Bunsen flame.
d Allow to cool and then look closely at where
Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron III oxide, Fe2O3. The oxygen must be removed from the iron III oxide inread more
· That type of mineral from which of metal is very easy and economical is known as . How to Get Good Marks in CBSE Board Exams All are mineral but all minerals are notread more
The minerals from which metals can be conveniently and profitably are called _____ The of metals from and then refining them for use is known as _____. is the process in which a carbonate is heated below melting point in absence of air is the process in which metal oxides are reduced to molten metal by using carbonread more
· a If the density of the is 2.0 g/cm3, calculate the volume of removed each year. b Calculate . Chimestry Iron is impure Fe_2O_3. When Fe_2O_3 is heated with an excess of carbon coke, metallic iron and carbon monoxide gas are produced. From a sample of weighing 950kg , 533kg of pure iron is obtainedread more