The future of copper

We are running out of copper-rich ores. Research is being carried out to find new ways to extract copper from the remaining low-grade ores, without harming the environment too much. This research is very important, as traditional mining involves huge open-cast mines that produce a lot of waste rock. Watch You...

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Copper

Copper is soft and easily bent and so is a good conductor of electricity, which makes it useful for wiring. Copper is also a good conductor of heat and it does not react with water. This makes it useful for plumbing, and making pipes and tanks. Copper ores Some copper ores are copper-rich – they...

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Extracting metals and making alloys

Metals are very useful. Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them: most everyday metals are mixtures called alloys. Methods of extracting metals The Earth's crust contains metals and metal compounds such...

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Quarrying

You need to be able to evaluate some of the effects of the limestone industry. The main advantages and disadvantages of the limestone industry AdvantagesDisadvantages Limestone is a valuable natural resource, used to make things such as glass and concrete.Limestone quarries are visible from long...

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Uses of limestone

Limestone is a type of rock, mainly composed of calcium carbonate. Limestone is quarried (dug out of the ground) and used as a building material. It is also used in the manufacture of cement, mortar and concrete. Reactions with acids Carbonates react with acids to produce carbon dioxide, a salt...

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Products from calcium carbonate

For your exam, you need to know how calcium hydroxide is obtained from calcium carbonate. Making calcium oxide If calcium carbonate is heated strongly, it breaks down to form calcium oxide and carbon dioxide. Calcium oxide is yellow when hot, but white when...

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Transition metals

The transition metals are placed in the periodic table in a large block between groups 2 and 3. Most metals (including iron, titanium and copper) are transition metals. The transition metals Common properties The transition metals have these properties...

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Calcium carbonate

Limestone is mainly calcium carbonate, CaCO3, which when heated breaks down to form calcium oxide and carbon dioxide. Calcium oxide reacts with water to produce calcium hydroxide. Limestone and its products have many uses, including being used to make cement,...

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