揭開水溶液的秘密
Interactive Video
•
Science
•
6th Grade
•
Medium
Hui M
Used 4+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
糖溶解在水中後,它會發生什麼變化?
它會完全消失,不再存在。
它會分解成肉眼看不見的超小分子,均勻分佈在水中。
它會變成另一種物質。
它會沉澱到杯底。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
溶質除了固體之外,還可以是什麼狀態?
只有液體。
只有氣體。
液體和氣體。
固體、液體和氣體都不能。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為什麼食鹽水可以導電,而糖水卻不行?
食鹽水中的水分子比糖水多。
食鹽溶解後會分解成帶電的離子,而糖不會。
糖水中的糖分子太大,阻礙電流通過。
食鹽水是藍色的,糖水是棕色的,顏色影響導電性。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
胃藥(鹼性)如何幫助緩解胃酸過多(酸性)引起的不適?
胃藥會增加胃的消化能力。
胃藥會中和胃酸,使其變得溫和。
胃藥會覆蓋在胃壁上,形成保護層。
胃藥會加速胃酸排出體外。
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