
2下3-1電解質
Quiz
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Chemistry
•
8th Grade
•
Practice Problem
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Medium
hsiangchi chang
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14 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
關於電解質的敘述,下列何者正確?(甲)電解質水溶液可以導電;(乙)電解質可以溶於水;(丙)電解質是化合物;(丁)會導電的物質都是電解質。
甲乙丙
乙丙丁
甲乙丁
甲丙丁
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
有關電解質的說法,下列敘述何者正確?
銀的導電性最佳,所以銀為電解質
固體的小蘇打不能導電,所以小蘇打不是電解質
氯化氫氣體不能導電,溶於水可以導電,故氯化氫氣體不是電解質
電解質水溶液中正負離子的個數不一定相等,但水溶液必為電中性
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
電解質的定義為:「凡溶於水能導電的化合物稱為電解質」。根據此定義,有關電解質與非電解質的敘述,下列何者正確?
銅線可導電,故銅為電解質
氨水的導電度很小,故氨為非電解質
食鹽的晶體不能導電,故食鹽為非電解質
氯化氫的水溶液可導電,故氯化氫為電解質
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列有關電解質的敘述,何者是錯誤的? (A) (B) (C) (D)。答案:A
Fe能導電,因此為電解質
電解質水溶液導電時,兩極必定有化學反應產生
電解質水溶液可能為中性、酸性或鹼性
電解質溶於水時,必定會形成正、負離子
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖的裝置,在容器甲中填充哪項物質,燈泡不會亮?
石墨
食醋
食鹽晶體
水銀
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
有關鈉原子Na和鈉離子Na+的性質敘述,下列何者正確?
鈉原子獲得一個電子形成鈉離子
鈉離子比鈉原子多一個質子
鈉原子比鈉離子安定
鈉原子和鈉離子的化學性質不同
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某化合物溶於水,已知水中含有Na+,則另一離子可能是:
H+
K+
Ca2+
Cl-
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