
原子与分子
Authored by Tan Yean
Chemistry
10th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪个不属于原子内部结构?
中子
质子
电子
分子
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪个质量最轻?
原子
质子
电子
中子
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
下列哪些有关道尔顿原子学说的内容是正确的?
物质是由原子组成,且原子可再被分割为中子、质子、电子。
原子不能被消灭,也不能被创造。
化学反应中,原子只能以简单的整数比结合
同种元素的质子质量有些不同,但化学性质相同。
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
将20 g的A和8 g的B混合进行反应产生C和D。反应结束后发现产生了5 g的C,且用掉了6 g的A,消耗完了B。问D的质量为多少 g?
5
9
17
23
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知碳3 g燃烧生成11 g的二氧化碳。若有24 g的碳完全与氧气反应产生二氧化碳,问共需要多少 g氧气?
8
11
64
88
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列各组物质都可说明倍比定律,除了?
NO2、NO
PCl3、PCl5
H2SO3、H2SO4
H2O、H2O2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知元素A和B可组成两种不同的化合物甲和乙。固定元素B质量时,测得A甲和A乙的比例为3:2,若甲的化学式为AB,则乙的化学式应为?
A3B2
A2B3
AB2
AB3
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