2-1認識物質
Quiz
•
Physics, Chemistry
•
8th - 9th Grade
•
Practice Problem
•
Medium
JOESPH HSU
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者屬於化學變化?
方糖丟入水中會冒出氣泡
打開汽水瓶蓋會冒出氣泡
大理石加鹽酸時會產生氣泡
用吸管吹氣到水中,水會冒出氣泡
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
榨西瓜汁時常常用濾網來過濾西瓜汁的殘渣,這是利用哪一種特性的差異來分離物質?
顆粒大小
顏色深淺
通過速率
密度大小
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
利用結晶法,加熱食鹽水以獲得食鹽,是利用下列何種特性?
食鹽較易蒸發
食鹽的沸點比水低
食鹽是純物質
食鹽的沸點比水高
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
純物質與混合物主要的區別為何?
前者組織均勻,後者組織不均勻
前者具有一定的性質,後者無固定的性質
前者有一定的形狀,後者無一定的形狀
前者有特定的顏色,後者無一定的顏色
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
對於物質的敘述,下列何者正確?
物質具有質量,但不占空間
物質占有空間,但不具質量
物質不占空間,也不具質量
物質占有空間並具有質量
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各圖所表示的操作,哪一項可以將鹽水中的鹽分離出來?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
過濾物由燒杯倒入漏斗時,應該怎麼做?
利用燒杯尖唇使液體沿尖唇流入漏斗中的濾紙上,以免四濺
利用燒杯尖唇使液體沿玻棒流入漏斗中的濾紙上,以免四濺
用乳頭滴管慢慢將過濾物滴入漏斗中的濾紙上,以免四濺
應將燒杯傾斜少許,為避免沾汙管壁,用刮勺窄端將過濾物直接送至瓶底
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