When calcium oxide reacts with water, the temperature of the mixture ___. A. decrea
Calcium (反应) with water but less violently than sodium and potassium do.相关知识点: 试题来源: 解析 【答案】reacts 【解析】本题考查动词解题步骤:1. 确定词性。根据空格发现本题缺少谓语,判定本空填写动词。2. 确定答案。翻译的动词形式,确定单词为react,且本题句子描述了一客观真理,根据三单,空格应填...
Calcium reacts with water less vigorously to form hydorgen gas and calcium hydroxide. In this reaction, the heat evolved is not sufficient for hydrogen to catch fire. underset("Calcium")(Ca)+2H(2)Otounderset("Calcium hydroxide")(Ca(OH)(2))+underset("H
Elementary calcium reacts with water. Calcium compounds are more or less water soluble. Calcium carbonate has a solubility of 14 mg/L, which is multiplied by a factor five in presence of carbon dioxide. Calcium phosphate solubility is 20 mg/L, and that of calcium fluoride is 16 mg/L. Cal...
Calcium is a silver-white metal, somewhat malleable and ductile; stable in dry air, but in moist air or with water reacts to form calcium hydroxide and hydrogen gas; when heated burns in air to form calcium oxide emitting a brilliant light. Discovered by Davy in 1808. ...
Calciumreacts with water. 钙和水会发生化学反应。 柯林斯例句 Vitamin D is necessary to aid the absorption ofcalciumfrom food. 从食物中吸取钙需靠维生素D的帮助。 《牛津高阶英汉双解词典》 We needcalciumto make bones. 我们需要钙来壮骨.
Formerly produced byelectrolysisof anhydrous calcium chloride, pure calcium metal is now made commercially by heating lime with aluminum. The metal reacts slowly withoxygen, water vapour, andnitrogenof the air to form a yellow coating of the oxide, hydroxide, and nitride. It burns in air or pu...
Runoff from fire control or dilution water may cause pollution. Fire Hazard These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (...
Air & Water Reactions Highly flammable. Insoluble in water. Spontaneously heat in the presence of air and moisture. This heat may be sufficient to ignite surrounding combustible materials [AAR 1991]. Reactivity Profile Inorganic reducing agents, such as CALCIUM RESINATE, react with oxidizing agents ...
Calcium Carbide reacts with water and moisture to produce flammable acetylene gas and lime. CaC2(s) + 2H2O(aq)→ C2H2(g) + Ca(OH)2(aq)This reaction was the basis of the industrial manufacture of acetylene, and is the major industrial use of calcium carbide. Steelmaking in the ...