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
litmus paper 听听怎么读 英[ˈlɪtməs ˈpeipə] 美[ˈlɪtməs ˈpeɪpər] 是什么意思 释义 石蕊试纸; 英英释义 litmus paper n.unsized paper treated with litmus for use as an acid-base indicator 学习怎么用 双语例句...
litmus - a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator litmus test acid-base indicator - an indicator that changes color on going from acidic to basic solutions litmus paper - unsized paper...
The litmus test is quick and simple, but it suffers from a few limitations. First, it's not an accurate indicator of pH; it does not yield a numerical pH value. Instead, it roughly indicates whether a sample is an acid or a base. Second, the paper can change colors for other reasons...
litmus,litmus test- a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator paper- a material made of cellulose pulp derived mainly from wood or rags or certain grasses ...
Red litmus paper is a valuable tool in the field of chemistry due to its simplicity and reliability. Its ability to quickly determine the acidity of a substance makes it indispensable in various laboratory settings. Whether in titration experiments, acid-base reactions, or educational demonstrations,...
The meaning of LITMUS is a coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator.
This demonstration illustrates that acid-base indicators may come in many forms, and further exhibits the reversible effects that acids and bases may have on the colors of such indicators. It is described here in the form in which it was presented during Michigan State University's Chemusical ...
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...