
濃度:802線上test
Chemistry
8th Grade
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
請選出「溶液」的組成(複選題)
溶質
溶劑
溶解
水
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
請選出「水溶液」(複選題)
糖溶於水
酒精溶於水
油不溶於水
化妝品溶於卸妝油
簽字筆溶於酒精
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
有關「擴散」,請選出正確描述(複選題)
溶質由高濃度往低濃度運動
溶質最後均勻分布
溶質最後停止運動
溶劑也會擴散
4.
DRAG AND DROP QUESTION
1 min • 1 pt
「濃度」的定義:定量 (a) 所含的 (b) 的量
5.
DRAG AND DROP QUESTION
1 min • 1 pt
「溶解度」的定義:定量 (a) 所能溶解的 (b) 最大量
6.
MATCH QUESTION
1 min • 1 pt
請配對正確的濃度公式
體積百分率濃度(%)
百萬分點(ppm)
重量百分率濃度(%)
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
有關「溶解度」,請選出正確描述(複選題)
必須在定溫下比較,因為溫度會影響溶解度
每100克溶劑所能溶解的溶質最大量
每100克水所能溶解的溶質最大量
25℃下,食鹽的溶解度是36克/100克水,此時鹽水濃度是36克/136克
100℃下,食鹽的溶解度是39克/100克水,此時鹽水濃度是39克/100克
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