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Date: 26-12-2018
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Date: 10-3-2019
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Date: 15-1-2018
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Magnesium takes it name from magnesite ore, named for the district Magnesia in Thessaly, Greece. Magnesium is a strong metal that is light and silvery-white. Recognized as a element as far back as 1775, it was first isolated in pure form by Davy in 1805. Magnesium has the ability to tarnish, which creates an oxide layer around itself to prevent it from rusting. It also has the ability to react with water at room temperature. When exposed to water, bubbles form around the metal. Increasing the temperature speeds up this reaction.
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4 أسباب تجعلك تضيف الزنجبيل إلى طعامك.. تعرف عليها
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أكبر محطة للطاقة الكهرومائية في بريطانيا تستعد للانطلاق
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العتبة العباسية المقدسة تبحث مع العتبة الحسينية المقدسة التنسيق المشترك لإقامة حفل تخرج طلبة الجامعات
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