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
The reaction will start as soon as K is added.Immediately put one piece of red litmus paper into the test-tube as described in step 2 and start timing.4. Record the time taken for the piece of red litmus paper to turn blue. If the piece of red litmus paper does not turn blue in ...
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...
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...
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 paper政府债券 ice paper冰纸:一种涂有含有盐的粘合剂的纸张,当涂层...
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 ...
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. ...
The simplest way to establish the pH of a substance – to figure out whether it is acidic or alkaline – is to use red and blue litmus papers. Red litmus paper reacts to alkaline substances by turning blue, while blue litmus paper reacts to acidic substances by turning red. ...
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...
red litmus paper 英 [red ˈlɪtməs ˈpeɪpə(r)] 美 [red ˈlɪtməs ˈpeɪpər]网络 红色石蕊试纸; 红色石蕊纸; 红石蕊试纸