
五下U.2選擇題
Authored by Kenny Hsieh
Science
5th Grade
Used 11+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
舀一些海水放在陽光下曝晒一段時間,會發生什麼變化?
海水變紅色
會形成黑色粉末
會出現食鹽結晶顆粒
沒有任何變化
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果不小心沾到酸性較強的水溶液時,要怎麼處理比較適當?
用大量肥皂水沖洗
用大量牛奶沖洗
用大量清水沖洗
用大量檸檬水沖洗
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個例子和水溶液的酸鹼性無關?
利用小蘇打水清洗油汙
酒精燈中的酒精沿著棉線上升
被蚊蟲叮咬後塗氨水止癢
在酸化的土壤上灑石灰粉
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
馬桶上的尿垢屬於鹼性物質,可以利用下列哪一種水溶液清除?
鹽酸
小蘇打水
熱水
石灰水
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一種水溶液會讓紅色和藍色石蕊試紙都不變色,且不容易導電?
肥皂水
食鹽水
糖水
汽水
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小妤混合檸檬水和石灰水後,發現混合的水溶液會讓紅色石蕊試紙不變色、藍色石蕊試紙變紅色。這時小妤如果想讓紅色和藍色石蕊試紙都不會變色,可以利用下列哪一個方法?
再慢慢的加入檸檬水
再慢慢的加入石灰水
加入紫色高麗菜汁
放在太陽底下一段時間
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用酒精燈加熱食鹽水溶液時,可以觀察到下列哪一個現象?
水分蒸發得很快
留下顆粒小的糖結晶
留下顆粒大的食鹽結晶
水分蒸發得很慢
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