彩虹汽水
Quiz
•
Chemistry, Science
•
3rd - 4th Grade
•
Easy
林宛穎 林宛穎
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5 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
影片中,爺爺用了廣用指示劑噴小蘇打粉,呈現藍色,請問小蘇打粉的酸鹼度是?
酸性
中性
鹼性
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
我們把食鹽加入水中攪拌溶解,一直加到開始產生沉澱,無法在溶解更多食鹽,這時候我們會稱這杯溶液為?
吃到飽溶液
飽和溶液
飽飽溶液
呷尚飽溶液
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
檸檬酸在水中溶解時會吸熱,所以杯子摸起來會?
冰冰的
熱熱的
沒有變化
忽冷忽熱
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
影片中,爺爺把小蘇打水溶液和檸檬酸水溶液混合,產生大量的氣泡,請問這些氣泡是?
一氧化碳 CO
碳酸氫鈉 NaHCO3
一氧化二氫 H2O
二氧化碳 CO2
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
影片中,爺爺對著瓶子裡的自來水噴廣用指示劑,自來水呈現什麼顏色?
藍色
紫色
黃色
七彩霓虹色
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