The substance that turns litmus paper red is ___. A. acid B. base C. neutral solution D. salt solution 相关知识点: 试题来源: 解析 A。能使石蕊试纸变红的物质是酸。选项 B 是碱;选项 C 是中性溶液;选项 D 是盐溶液。只有酸能使石蕊变红。反馈...
The substance that turns litmus paper red is___. A. an acid B. a base C. water D. salt 相关知识点: 试题来源: 解析 A。能使石蕊试纸变红的是酸。选项 B 碱使石蕊试纸变蓝;选项 C 水一般不会使石蕊试纸变色;选项 D 盐通常也不会使石蕊试纸变红。反馈...
百度试题 结果1 题目Before the reaction, what color did the acid solution turn blue litmus paper? A. Blue. B. Red. C. Green. D. Yellow. 相关知识点: 试题来源: 解析 B。解析:实验前,酸性溶液使蓝色石蕊试纸变红。反馈 收藏
A. acid B. base C. salt D. water 相关知识点: 试题来源: 解析 B。原因:“For example, litmus paper can turn from red to blue in the presence of a base and from blue to red in the presence of an acid.”。 反馈 收藏
Acid, any substance that in water solution tastes sour, changes the color of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical r
A. Tastes sweet B. Turns litmus paper blue C. Reacts with metals to produce hydrogen gas D. Has no E. ffect on indicators 相关知识点: 试题来源: 解析 C。本题考查酸的性质。酸尝起来是酸的,不是甜的,A 错误;酸能使石蕊试纸变红,不是变蓝,B 错误;酸能和金属反应产生氢气,C 正确;酸对指...
网络释义 1. 石蕊试纸遇酸度会变红 odict.net|基于13个网页 2. 作家要接触真实的生活 www.haodic.com|基于 1 个网页 例句 释义: 全部,石蕊试纸遇酸度会变红,作家要接触真实的生活 更多例句筛选 1. Litmuspaperturnsredoncontactwithanacid. 石蕊试纸接触到酸性时会。
For example, litmus paper turns red in acidic solutions and blue in basic solutions. When an acid is neutralized by a base, the litmus paper will change from red to blue or vice versa, depending on the starting pH. 1. What is the general equation for acid-base neutralization reaction?
a compound that usually dissolves in water, has a sour taste, reacts with a base to form a salt, and turns litmus paper red lsd acid医学词典英英释义 acid1 of 2noun a sour substancespecifically: any of various typically water-soluble and sour compounds that in solution are capable of rea...
CONSTITUTION:(A) A carrier of a macromolecular material such as filter paper, nonwoven fabrics, or membrane filter of natural or synthetic fibers (such as a cellulose acetate membrane having 0.1-0.4mu pore diameter) is allowed to support, on the same point, (B) a reagent composition ...