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
Red litmus paper is specifically designed to test for acidity. When the red litmus paper comes into contact with an acidic solution, it remains red. However, when it is exposed to an alkaline solution, it turns blue. This simple color change allows chemists to quickly determine the pH of a...
2. In order to monitor the progress of the reaction, in step 4, red litmus paper will be added to each mixture of solution K and solution U, in a test-tube. To prevent the paper from sticking to the wall of the test-tube, you will need to use the glass rod to add it as follo...
In the experiment, if a substance turns blue litmus paper red, it means the substance is ___. A. acidic B. basic C. neutral D. unknown 相关知识点: 试题来源: 解析 A。解析:在实验中,如果一种物质使蓝色石蕊试纸变红,这意味着该物质是酸性的。B 选项碱性物质会使红色石蕊试纸变蓝;C 选项中性...
3. 红色石蕊试纸 航海及海运专业英语词汇(R2) ... red light 红光 red litmus paper 红色石蕊试纸 red magnetism 红磁性 ... www.diyifanwen.com|基于10个网页 例句 释义: 全部,红色石蕊纸,红石蕊试纸,红色石蕊试纸 更多例句筛选 1. Turn red litmus paper blue. 蓝色石蕊试纸变红。 wenwen.soso.com ...
alkaline solution, red litmus paper turns blue. When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline. Red litmus paper can also be used to test the pH of a water-soluble gas by dampening the paper and exposing it to the gas...
red litmus paper基本解释 红色石蕊试纸;红色石蕊纸;红石蕊试纸 分词解释 red红色的 litmus石蕊 paper纸 猜你喜欢 kraft paper牛皮纸 paper cup纸杯 paper bag纸袋 federalist papers《联邦主义议文集》 joss paper神纸 kindle paperwhite亚马逊 Cone Paper[化] 纱管纸 bamboo paper[化] 毛边纸; 竹纸 government ...
Blue Litmus Paper When blue litmus paper is placed in a substance that is acidic, it will turn to red. However, if placed in a substance that is basic or neutral, it will remain blue. Blue litmus paper is meant to test only for an acidic pH level. ...
A. It turns blue litmus paper red B. It has a sour taste C. It reacts with metals to produce hydrogen D. It turns red litmus paper blue 相关知识点: 试题来源: 解析 D。解析:在化学中,碱的特性是能使红色石蕊试纸变蓝。“alkali”是碱的意思,“litmus paper”是石蕊试纸。选项A是酸的特...
Red litmus paper, pH value color change range: 4.5 (red) ~ 8.0 (blue)|红石蕊试纸, PH值变色范围:4.5(红色)~8.0(蓝色) 基本信息 更多信息 中文名称: 红石蕊试纸, PH值变色范围:4.5(红色)~8.0(蓝色) 中文同义词: 红石蕊试纸, PH值变色范围:4.5(红色)~8.0(蓝色) 英文名称: Red litmus paper, pH...