
4-2_怎麼辨認水溶液的酸鹼
Authored by Lorraine Li
Science
3rd Grade
Used 2+ times

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44 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將新鮮的紫色高麗菜切成細絲後,放入熱水中浸泡,可以利用它的汁液檢驗水溶液的酸鹼性。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將紫色高麗菜汁加入不知名的水溶液中,水溶液呈現偏藍綠色,則可推測水溶液為鹼性。
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水溶液只能分成酸性水溶液和鹼性水溶液兩種。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水溶液依照酸鹼性來區分,可分成酸性水溶液、鹼性水溶液和中性水溶液。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我們可以利用眼睛、鼻子來觀察水溶液的特質,例如顏色、溶解情形、氣味等。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我們可以利用人的視覺、嗅覺等感官來觀察並分辨未知水溶液的性質,最準確的辨別方式則是利用嘴巴直接嘗水溶液。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我們不能直接用舌頭判斷出水溶液的酸鹼性,但可以用手接觸水溶液來判斷酸鹼性。
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