C. Turns it red D. Turns it black 答案:C。解析:文中提到 Acids have several properties. They turn blue litmus paper red.,即酸能使蓝色石蕊试纸变红。 <问题 3> What gas is produced when a metal reacts with an acid? A. Oxygen gas B. Carbon dioxide gas C. Hydrogen gas D. Nitrogen ...
An acid is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts More About Acids Aqueous solutions of acids have a pH of less than 7 A lowe...
Acids turn blue litmus paper red, whereas bases make blue litmus paper red. Acids and bases flavour and texture Taste and texture are two further distinguishing characteristics of acids and bases. It should be reminded that individuals should always observe lab safety requirements and never eat or...
In a water solution, how do acids differ from bases? a. Acids form salts but bases do not. b. Acids turn litmus blue, while bases turn litmus red. c. Acids form hydrogen ions (H+), while bases form hydroxide ions (OH-).
In chemistry,basesare substances that, in aqueoussolution, are slippery to the touch, taste astringent, change the color of indicators (e.g., turn red litmuspaper blue), react with acids to form salts, promote certain chemical reactions (basecatalysis), accept protons from any proton donor, ...
Acids in water solutions exhibit the following common properties: they taste sour; turnlitmuspaper red; and react with certain metals, such as zinc, to yield hydrogen gas. Bases in water solutions exhibit these common properties: they taste bitter; turn litmus paper blue; and feel slippery. Whe...
A. They taste sour. B. They can turn blue litmus paper red. C. They react with metals to produce hydrogen gas. D. They feel slippery. 相关知识点: 试题来源: 解析 D。解析:酸尝起来是酸的,能使蓝色石蕊试纸变红,能和金属反应产生氢气,而感觉滑腻是碱的性质,不是酸的性质,所以D正确。反馈...
Basesare 'chemical opposites' of acids.Metal oxidesandmetal hydroxidesare bases.A fewbases are soluble in water, and they are calledalkalis.Ammoniais also an alkali. Alkalis are alsoelectrolytes, and they turn red litmus paper blue. Reactions ...
Bases turn red litmus paper blue, have a bitter taste, and have a pH of greater than 7. Compare acid. 2. Mathematics a. The side or face of a geometric figure to which an altitude is or is thought to be drawn. The base can be, but is not always, the bottom part of the ...
Properties electrolytes turn litmus red sour taste react with metals to form H 2 gas slippery feel turn litmus blue bitter taste ChemASAP vinegar, milk, soda, apples, citrus fruits ammonia, lye, antacid, baking soda electrolytes Acid vs. Base Acid pH > 7 bitter taste does not react with me...