紫色高麗菜汁滴入哪一種水溶液後,與紫色高麗菜汁滴入醋後的顏色變化相似?
水溶液

Quiz
•
Chemistry
•
5th Grade
•
Easy
彭 逸芳
Used 59+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
①砂糖水
②食鹽水
③檸檬酸
④小蘇打水
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
想要測試水溶液的酸鹼性,下列哪一種方法錯誤?
①將紅鳳菜汁滴入水溶液中
②手直接拿取石蕊試紙
③將紫色高麗菜汁滴入水溶液中
④吸取指示劑的滴管不可以接觸到水溶液
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用具有酸鹼性的水溶液時,下列哪一項敘述錯誤?
①使用前詳看說明
②使用時要戴手套
③可以隨意和其他水溶液混合
④要收納在兒童不易拿取的地方
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於利用石蕊試紙和紫色高麗菜汁檢驗水溶液的敘述,以下哪一項錯誤?
①將紫色高麗菜汁加入醋中,水溶液會變成紅色
②將紫色高麗菜汁滴入石灰水中,水溶液依舊為偏紫色
③紅色石蕊試紙塗檸檬酸,試紙依舊為偏紅色
④藍色石蕊試紙塗食用醋,試紙會變成紅色
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列關於「水溶液的導電性實驗」的敘述哪一項正確?
①使用後的水溶液可以重複使用
②實驗時,浸入水溶液中的迴紋針和鋁箔紙可以重複使用
③放入待測水溶液中的鋁箔紙可以相互碰觸
④如果發光二極體亮了,表示此水溶液具有導電性
6.
OPEN ENDED QUESTION
3 mins • 1 pt
(2)準備好蝶豆花汁後,凱莉開始調配漸層飲料。她在網路上查到的蝶豆花變色狀況為:藍色的蝶豆花汁遇到鹼性溶液會呈現綠色、遇到酸性溶液會變成紫紅色。請問她應該怎樣做,才能完成下圖中的漸層飲料?將符合題意的代號填在( )裡:
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
凱文在實驗室利用石蕊試紙檢驗數種不同水溶液的酸鹼程度如下表,請你判斷這些水溶液各是什麼性質,將適當的答案填在表格裡:
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