
康軒5上自然(三)小考B
Quiz
•
Science
•
5th Grade
•
Practice Problem
•
Medium

張佾嵐 張佾嵐
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
紫色高麗菜汁指示劑和石蕊試紙都可以用來檢驗水溶液的酸鹼性。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
任意滴幾滴酸性水溶液到鹼性水溶液中,所形成的混合水溶液都會變成中性。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
石蕊試紙不但可以檢驗水溶液的性質,還可以檢驗水溶液的濃度。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物質可以溶解在水中,就形成水溶液;反之,如果物質無法溶解在水中時,則不能稱為水溶液。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
經過水溶液的導電性實驗之後,我們知道酸性水溶液和鹼性水溶液都容易導電,而中性水溶液則無法導電。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
分別在兩個相同的燒杯中,倒入20℃、30毫升的冷水,並加入1平匙的食鹽,其中一杯攪拌至完全溶解,另一杯不攪拌,兩杯食鹽水分別稱重後,會發現完全溶解的那一杯重量較重。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
發光二極體的功能和一般燈泡一樣,連接在電路中,可以作為通路或斷路的判斷指標。
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