They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper."We’ve learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other." British ...
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 and Base Jeopady The Bio Enigma酸和碱的危险!生物之谜.ppt,Answer! Strong Back True or False!! Ammonia is an acid. Answer! Answer! False Back True or False!! B Base solutions have a pH below 7. Answer! Answer! False Back True or False!! An alkali is
Is a solution that turns the pH paper orange a weak acid, a strong acid, a weak base, or a strong base? Explain. pH Scale: The pH scale is used to differentiate between acid and base. It is based on hydrogen ion concentration. It can be w...
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?
The meaning of ACID is a sour substance; specifically : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, redden litmus, and have a pH less than 7, that are hydrogen-containing
Properties of acids include being corrosive and having a sour tasteAnswer!Answer!TrueBackTrue or False!!Lemons contain citric acid.Answer!Answer!TrueBackIndicators!Which indicator determines the strength of an acid or a base?Answer!Answer!pH indicatorBackIndicators!What color does blue litmus paper ...
7、he strength of an acid or a base? answer!answer! ph indicator backindicators! what color does blue litmus paper turn in an acid? answer!answer! red backindicators! what color does red litmus paper turn in an base? answer!answer! blue backindicators! what color does red litmus paper ...
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...