有關物質和物體的敘述,下列何者錯誤?

升高一複習-溶液

Quiz
•
Chemistry
•
8th - 10th Grade
•
Medium
阿弦校長 阿弦校長
Used 3+ times
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
物質佔有空間,具有質量
物質是由物體所組成的
木材、玻璃、鐵是物質
不同物體可能含有相同的物質
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某液體在定壓下加熱至沸騰,並繼續加熱,發現溫度仍在上升,由此可以判斷該物體
必定是一元素
必定是一化合物
可能是一種純物質
必定是混合物
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
下列各項有關二氧化碳的性質敘述,請問哪些是化學性質[複選]
無色氣體
比空氣重
不能燃燒
不導電
水溶液呈酸性
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲燒杯裝水300 mL 加入一些砂糖充分攪拌後,杯中仍留有些許未溶解的糖在杯底,若將上層倒150 mL 到乙杯中,則下列何者正確?
甲杯的糖水較乙杯的甜
乙杯的糖水較甲杯的甜
兩杯糖水一樣的甜
乙杯糖水的濃度是甲杯的一半
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
鹽酸溶液25%、60公克,需要再加入多少公克的水,使鹽酸溶液的濃度變為15%?
100
80
60
40
20
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某生配製食鹽水溶液,當溶液達到飽和後,杯底尚留少許食鹽晶體,隔天中午發現食鹽結晶已消失,下列那一項敘述比較能解釋此現象?
食鹽在水中放置越久,溶解度越大
隔天中午氣溫較高,食鹽溶解度增大
杯中水分蒸發,導致食鹽溶解
放入太多食鹽,導致溶解度改變
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有甲、乙、丙、丁四次以雙氧水製氧氣的實驗,實驗數據如表。四次實驗結束後,所產生氧氣質量的大小順序為何?
甲=乙=丙=丁
丁>乙>甲>丙
丁>乙>甲=丙
甲=丙>乙>丁
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
俠客知道二氧化碳可溶於水,仍然用排水集氣法,而不用向上排氣法,其主要理由為何?
排水集氣法較方便
排水集氣法可收集到較純的二氧化碳,且二氧化碳對水的溶解度不大
排水集氣法收集氣體較多
向上排氣法可收集到較純的二氧化碳
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