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The Comparative Abundance Of The Elements

   
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Title: The Comparative Abundance Of The Elements
 
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Subject: Science
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Date: November 3, 1999
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Length: 2 / 509
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Carbohydrates and fats are compounds which contain carbon, hydrogen and oxygen only. Proteins are also compounds and they contain nitrogen, sulfur and occasionally phosphorus. Living matter cannot live on these six elements alone; even though they make up 99% of the mass, they also need some compounds of other elements such as calcium, potassium, sodium, magnesium, iron, zinc, fluorine and others...
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Living matter cannot live on these six elements alone; even though they make up 99% of the mass, they also need some compounds of other elements such as calcium, potassium, sodium, magnesium, iron, zinc, fluorine and others. These elements are required as compounds so that livings things can use them...
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Common topics in this essay:
 
Biology, The Five Major Compounds   Oxygen And Carbon Dioxide   An investigation to see how much oxygen is given off when different concentrations of catalase are added with hydrogen peroxide.   Chemical Reactions of Copper compounds   Classification Tests On Organic Compounds   Concentration Affects The Rate Of Oxygen Production When Raw Liver (Catalyse), And Hydrogen Peroxide Is Mixed   Differences Between Ionic and Covalent Compounds   Elements and their compounds   Identifying 3 Unkown Compounds (Physical Properties of Ionic and Molecular Solids)   Identifying Organic Compounds Lab Report   Organic Compounds Lab Report   PROTEINS,CARBOHYDRATES,LIPIDS   Separation of Acid, Base and Neutral Compounds from a Solid Mixture by Liquid-Liquid Extraction   Separation of three compounds   The Comparative Abundance Of The Elements  
 
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