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E.g. brass made from copper and zinc. What are alloys like compared to the metals that make them up? Harder, because the different size atoms in the crystal lattice stop the layers from sliding over each other like in the pure metal.
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Compare The Cost And Energy Expenditure Involved In The Extraction Of Aluminium From Its Ore And The Recycling Of Aluminium GCSE CHEMISTRY - Extraction of Aluminium - Energy - Cost The Extraction of Aluminium by including Energy, Cost and Recycling. about 5% …
Extraction of Metals. Revision Questions. The best way to remember the information in this chapter is to get a pen and paper and write down your answers before clicking on the Answer link which will take you to the correct page.. You may have to read through some of the page before you find the answer. If the answer you have written is not right, change it to the ...
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Start studying AQA GCSE Chemistry 2011. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... Why is copper such a useful metal? ... Recycling metals saves energy and our limited metal ores and fossil fuels. The pollution from extracting metals is also reduced
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Analyse information to compare the cost and energy expenditure involved in the extraction of aluminium from its ore and the recycling of aluminium. Aluminium is the third most abundant metal in the Earth's crust, but is more expensive to extract it from its ore than iron.
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Therefore,the recycling of these two useful metals and others such as iron and aluminium is most important. In recycling, metals are melted down before reshaping into their new use. However, this can be costly. ... GCSE » Chemistry » Extraction of Metals. ... Types of Extraction. Methods of extraction.
Why recycling metals is important. ... Recycling copper only takes 15% of the energy needed to mine and extract new copper; Energy isn't free, so recycling saves us money; There's a finite amount of each metal in the earth. ... GCSE AQA Triple Award Chemistry C1. 0.0 / 5.
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Recycling ¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨ Aluminium is extensively recycled because, apart from being easy to recycle, less energy is needed to recycle it than is needed to extract aluminium …