
高一化学评测(第三、四、五章)
Authored by Yii Ning
Chemistry
10th - 11th Grade
26 Questions
Used 34+ times

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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列说法中,错误的是?
原子质量是相对原子质量的简称
原子的质量约等于原子核内质子和中子的质量之和
钠的原子核里有11个质子和12个中子,核外有11个电子,所以钠原子不显电性
相对原子质量是一个比值
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
根据元素的化合价判断,下列化学式错误的是?
FeSO4
Na2CO3
ZnCl2
MgNO3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知氮化镁中,镁元素与氮元素的质量百分比分别为72%和28%,则氮化镁的化学式是
MgN2
Mg2N
Mg2N3
Mg3N2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列铁的氧化物中,铁的质量百分比最高的是?
FeO
Fe(OH)
Fe2O3
Fe3O4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知一氧化氮气体与二氧化氮气体含有相同质量的氮元素,则这两种气体的质量之比是多少?
2:3
3:2
15:23
23:15
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
根据元素的化合价判断,下列化学式正确的是?
HSO4
Na2CO3
KO
Zn2SO4
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列说法错误的是?
物质的量就是物质的质量
物质的量、阿伏加德罗常数均为物理量,它们的单位分别是 mol、mol-1
阿伏加德罗常数 NA 的近似值是 6.02 X 1023 mol -1
物质的量是国际单位制中的七个基本物理量之一
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