Alkali and Alkaline earth metals (Periodic Table of the - download pdf or read online

By Monica Halka

ISBN-10: 0816073694

ISBN-13: 9780816073696

ISBN-10: 1438131844

ISBN-13: 9781438131849

Scientists categorize the chemical parts as metals, nonmetals, and metalloids principally in line with the weather' skills to behavior electrical energy at general temperatures and pressures, yet there are different differences taken under consideration whilst classifying the weather within the periodic desk. The alkali metals, for instance, are metals, yet have such detailed houses that they're given their very own class. an identical is right for the alkaline earths.

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Sample text

Most processed foods incorporate high sodium content either to help preserve foods like meats and vegetables or to satisfy humans’ increasing desire for a salty taste, as in potato chips or similar snacks. S. Food and Drug Administration (FDA) recommends limiting daily sodium intake to around 2,300 mg, though medical practitioners would prefer it to be lower. In 2007, the American Medical Association (AMA) published a letter urging the FDA to reconsider its rating of salt as a food generally considered to be safe.

Important sodium salts include the chloride, carbonate, bicarbonate, citrate, hypochlorite, chlorate, fluoride, nitrate, phosphate, sulfate, thiosulfate, hydroxide, and azide. Sodium chloride (NaCl, also known as table salt or rock salt) is used to cure fish, pack meat, cure hides, preserve canned foods, flavor foods, and melt ice on city roads. Sodium carbonate (Na2CO3, also called soda ash) is the ingredient in washing soda, which is used as a water softener for laundry. Sodium carbonate is also used in the glass industry and in the manufacture of soap, detergents, and other cleansers.

The subject of sodium atoms is found in much current scientific research. The transfer of angular momentum from laser light to particles was first accomplished in a small cloud of sodium atoms. Sodium metal has a very high reactivity (although it is not as reactive or as hazardous as potassium, rubidium, or cesium). An important use of the metal is to reduce the ores of less active metals to their neutral state. Examples include zinc, chromium, and titanium. Other uses of sodium include the following examples.

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Alkali and Alkaline earth metals (Periodic Table of the Elements) by Monica Halka

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