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
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-tub e. 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 fo...
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 ...
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...
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...
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...
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...
What can bases turn red litmus paper into? A. Red B. Blue C. Green D. Yellow 相关知识点: 试题来源: 解析 B。解析:文中提到 Bases, on the other hand, taste bitter and feel slippery. They can turn red litmus paper blue. 碱尝起来是苦的,摸起来很滑,能使红色石蕊试纸变蓝。
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
A. Feels slippery B. Turns litmus paper red C. Does not react with acids D. Has a sour taste 相关知识点: 试题来源: 解析 A。本题考查碱的性质。碱摸起来滑滑的,A 正确;碱能使石蕊试纸变蓝,不是变红,B 错误;碱能和酸反应,C 错误;碱尝起来是涩的,不是酸的,D 错误。反馈...