Vitamins such as calcium, iron, zinc and selenium are indispensable in our growth process. Otherwise, we will easily suffer from various symptoms such as nutritional imbalance, yellow skin complexion, hair loss, etc. The vitamin related to our bones is calcium, and many advertisements also emphasize how important calcium supplementation is for us to strengthen our bones. There are differences in physical functions between boys and girls. What are the symptoms of calcium deficiency in girls? If you are deficient in calcium, you will generally experience various symptoms such as frequent leg cramps, back pain, poor sleep, easy awakening during sleep, joint pain, and weakness in the waist and knees. Guidance: If symptoms of calcium deficiency have already appeared, dietary supplements alone are far from enough. It is recommended to take calcium tablets to supplement calcium. Women usually take Calcium Tablets. Calcium Tablets are very effective in improving various symptoms of calcium deficiency in women, such as cramps, back pain, poor sleep, hair loss, etc. Calcium Tablets are suitable for women to take for calcium supplementation. Women who want to supplement calcium should remember to go out and get more sun exposure. Don't be afraid of getting tanned. Sun exposure can promote calcium absorption. At the same time, do not drink carbonated drinks or eat high-calorie foods, because these will hinder the body's absorption of calcium and cause calcium loss. Calcium is a metallic element with the symbol Ca. It is located in the 4th period and the IIA group in the periodic table of chemical elements. It is a silvery-white crystal at room temperature. Animal bones, clam shells, and egg shells all contain calcium carbonate. It can be used as a deoxidizer for alloys, a dehydrating agent for oils, a reducing agent for metallurgy, a desulfurization and decarburization agent for iron and ferroalloys, and a getter in electron tubes. Its compounds are widely used in industry, construction engineering and medicine. For a long time, chemists regarded calcium oxide obtained by roasting limestone containing calcium carbonate as an indivisible substance. It was listed in the table of elements published by Lavoisier in 1789. But Davy ignored this and began electrolyzing calcium oxide in 1808. The method David initially used was not ideal, so he was unable to separate the metallic calcium. By May 1808, Davy was inspired by an experiment conducted by Berzelius and the Swedish royal physician Pontin to electrolyze a mixture of quicklime and mercury to obtain calcium. He mixed moist quicklime and mercuric oxide in a ratio of 3 to 1, placed it on a platinum sheet, connected to the positive pole of the battery. Then he made a depression in the mixture, poured mercury into it, inserted a platinum wire, connected it to the negative pole of the battery, and obtained a larger amount of calcium-mercury alloy. The calcium amalgam is distilled to obtain silvery white metallic calcium. From then on, calcium was identified as an element and named calcium, with the element symbol being Ca. Calcium comes from the Latin word calx, which means quicklime. |
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