中四化學上學期溫習

Quiz
•
Chemistry
•
10th Grade
•
Hard
盧冠恆老師 盧冠恆老師
Used 28+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪個離子是在海水中蘊藏量最豐富的陽離子?
氯離子
硫酸根離子
鈉離子
鎂離子
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
鋰具有兩個同位素 (Li-6和Li-7)。鋰的相對原子質量是6.9。Li-6的相對豐度是多少?
10%
20%
80%
90%
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
銫與鈉在周期表中屬於同一族。下列哪項陳述不正確?
硫酸銫的化學式是Cs2SO4。
銫失去電子以形成陽離子。
銫與冷水劇烈反應,並釋出氫。
銫在空氣中燃燒,產生金黃色火焰。
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
硒 (Se) 是周期表中第VI族的元素。下列哪個硒化合物的化學式不正確?
H2Se
AlSe3
CSe2
SeCl2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列哪些有關氮的陳述正確?
(1) 它可以利用分餾法從空氣中提取出來。
(2) 由於氮是貴氣體,故它非常不活潑。
(3) 它具有簡單分子結構。
只有(1)和(2)
只有(1)和(3)
只有(2)和(3)
(1)、(2)和(3)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些氧化物在室溫下呈固態?
(1) MgO
(2) SiO2
(3) CO2
只有(1)和(2)
只有(1)和(3)
只有(2)和(3)
(1)、(2)和(3)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
金屬X在空氣中加熱時會產生磚紅色火焰,並生成白色固體。X可能是
鋇。
鈣。
鉀。
鈉。
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