Afterglow: A faint glow that appears in the sky after the sun has set. It is caused by the scattering of sunlight in the upper atmosphere. Airglow: A faint glow that appears in the night sky caused by chemical reactions in the upper atmosphere. Alexander’s band: A dark region that appears between the two bows […]
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Beryllium is a rare and highly toxic metal with remarkable physical and chemical properties. Beryllium symbol: Be Physical properties of Beryllium element: Beryllium is a hard, silvery-gray metal that is brittle and has a low density. It has a high melting point and is a good conductor of electricity. Beryllium is very corrosion resistant and […]
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Carbon is a chemical element with the symbol C and the atomic number is 6. It is a nonmetallic element and the basis of all known life on Earth. Physical properties of carbon: Carbon has multiple allotropes, including graphite, diamond, and fullerenes. Graphite is a soft, black, and slippery material that is used in pencils, […]
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Physical Properties of sulfur: Appearance: yellow solid Density: 2.07 g/cm³ Melting point: 115.21 °C Boiling point: 444.6 °C By Hi-Res Images of Chemical Elements – <a rel=”nofollow” class=”external free” href=”http://images-of-elements.com/sulfur.php”>http://images-of-elements.com/sulfur.php</a>, CC BY 3.0, Link Chemical Properties of sulfur: Reactivity: Sulfur is a highly reactive element and readily reacts with many other elements and compounds. Combustibility: […]
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A characteristic of cnidarians is the presence of stinging cells called cnidocytes. These cells contain nematocysts, which are used for both prey capture and defense. Another distinguishing feature of cnidarians is the presence of a gastrovascular canal that functions as both a digestive and circulatory system. Cnidarians have a simple nervous system, which includes a […]
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Aluminum is an element. Its symbol Al and the atomic number is 13. It is a highly reactive, silvery-white metal that is the third most abundant element in the Earth’s crust. Chemical Properties of Aluminum: Aluminum is a highly reactive metal that reacts with many substances, including oxygen, water, acids, and bases. It easily reacts […]
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Physical Properties of Nitrous oxide gas: Nitrous oxide (N2O), also known as laughing gas, is a colorless, odorless, and slightly sweet-tasting gas. It is a relatively stable gas that is non-flammable and non-toxic at normal atmospheric concentrations. Nitrous oxide has a boiling point of -88.5°C (-127.3°F) and a melting point of -102°C (-151.6°F). Chemical Properties […]
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Physical properties of nitrogen gas: Nitrogen (N2) is a colorless, odorless, and tasteless gas at room temperature. It is relatively unreactive and forms a diatomic molecule (N2) due to a strong triple covalent bond. Nitrogen gas is slightly lighter than air and can escape from containers more easily than other gases. Nitrogen gas has a […]
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Magnesium is an element with the symbol Mg. Its atomic number is 12. It is an alkaline earth metal and is the eighth most abundant element in the Earth’s crust. Below is an overview of the chemical and physical properties of magnesium, its valency, electronic configuration, uses, reactions with other elements, and industrial and medical […]
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Physical Properties of Potassium: Appearance: soft, silver-white metal Density: 0.89 g/cm³ Melting point: 63.5 °C Boiling point: 759 °C Chemical Properties of Potassium: Reactivity: Potassium is a highly reactive metal that reacts vigorously with water and air. It is highly flammable and must be stored in oil or another non-reactive substance. Oxidation: Potassium readily oxidizes […]
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