八下:第二次段考範圍習作(3-2-ch4)
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
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46 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列選項中的水溶液,何者屬於酸性溶液?
NaOH
HCl
Ca(OH)2
NH3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將濃硫酸滴在方糖上,方糖會變成焦黑的碳,是因為濃硫酸具有什麼性質?
酸性強
腐蝕性
脫水性
沸點高
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關酸性物質的敘述,何者錯誤?
醋酸與大理岩反應會產生二氧化碳
鎂帶與鹽酸反應會產生氧氣
酸性物質溶於水會解離出氫離子
鹽酸可用來清洗金屬表面
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何種物質可作為乾燥劑,且其水溶液可用來檢驗二氧化碳的存在?
氫氧化鈉
氧化鈣
氨
氯化鈣
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
俗稱燒鹼或苛性鈉的白色固體物質為何?溶於水會如何反應?
氫氧化鈉
二氧化碳
吸熱
放熱
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
若將氫氧化鈉放在紙上,不到數分鐘,就會產生變化,這是因為它易吸收空氣中的什麼物質而變質?(選二)
二氧化碳
二氧化氮
水
氮氣
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
取甲、乙、丙、丁四種液體,分別以石蕊試紙檢驗,並與鎂和大理岩反應,結果如附表,
請問何者一定是酸性?(選二)
甲
乙
丙
丁
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