B 13.D 14.D 15.D 16.C 17.B 18.C 19.D 20.D 查看更多

 

题目列表(包括答案和解析)

下表是元素周期表中的部分信息,A、B、C、D分别是4种粒子的结构示意图.请根据图中信息及相关要求真空.
3  Li
4  Be
5  B
6  C
7  N
8  O
9  F
10  Ne
11  Na
12  镁
Mg
13  Al
14  Si
15  P
16  S
17  Cl
18  Ar

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(1)硫元素的原子的核外电子数为______.
(2)A、B、C、D 4种粒子中,易得到电子,形成稳定结构的是______(填字母序号).
(3)某离子带2个单位正电荷,其结构示意图如图
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,该离子的符号是______.

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下表列出了1-18号元素的原子序数和元素符号:
原子序数 1 2 3 4 5 6 7 8 9
元素符号 H He Li Be B C N O F
原子序数 10 11 12 13 14 15 16 17 18
元素符号 Ne Na Mg Al Si P S Cl Ar
请回答下列问题:
(1)1一18号元素中属于稀有气体元素的有He、Ne、
Ar
Ar
(填元素符号).
(2)10一18号元素中属于金属元素的有
5
5
种.
(3)如图为某粒子的结构示意图,当x与y满足
x=10+y
x=10+y
的条件时,该粒子为原子.
(4)具有相同原子数和电子数的分子或离子叫等电子体,等电子体具有相似的结构和性质.下列各组粒子中属于等电子体的是
B
B
(填字母序号).
A.NO和O2      B.CO和N2      C.SO2和CO2      D.Na+和OH-

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下表是元素周期表的一部分,下列说法中,不正确的是(  )
6  C
7  N
8  O
9  F
13  Al
14  Si
15  P
16  S
17  Cl

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完型填空(共20小题;每小题1分,满分20分)
阅读下面短文,掌握其大意,然后从四个选项(A、B、C和D)中,选出最佳选项。
"Hey, Tahlia! How's the model?"
I had just taken a bite of my hot dog __21__ I heard a familiar voice yelling at me from across the crowded school yard. I saw a group of popular girls who were all __22__.
"What kind of __23_ are you going to do? An ad for a Frankenstein movie?" More laughter. My stomach twisted into a tight knot. How could they humiliate (羞辱) me like this, __24__ the entire school? As I walked into the cafeteria, I __25__ the dark scars on my right hand.
At 9 months old, I knocked over a tea pot and dumped boiling water allover my hands and stomach. My parents __26__ me to the hospital, but I had to have skin graft (移植) operation. I was in so much pain! But what __27__ me most were the cruel things people said about how I looked, __28__ that day at lunch.
The girls were being supermean to me because they'd heard I was considering doing some modeling. A close friend had suggested that I shouldn't let my scars limit me and that I might __29__ a good model.
But after that __30__ at school, I was sure I'd made a huge mistake. Upon arriving home, I covered the mirror with a blanket, fell on my bed and sobbed.
The next day, I __31__ myself to go to school. At lunch my best friend Jesse tried to encourage me: "You can't __32_ forever, Tahlia. So what if you have a few scars? Just go outside and show them that you're just as good as they are." Although I knew he was right, I couldn’t __33__ standing up for myself like that.
However, that night as I sat on the bed, my friend's words replayed in my mind. I'm __34__ hiding from myself, I thought. How stupid! Slowly, I stood up, walked over to the __35__, and tossed the blanket aside. There, in the mirror I saw a slim, dark-haired, blue-eyed girl, looking just fine, __36__ with a few scars.
The next day I wore a comfortable T-shirt to school. What's more, I had lunch outside the cafeteria, __37__ beside those mean girls. They were shocked that I should dare to walk into their territory. I felt __38_ too—free and happy.
Sometimes people still look at me strangely. They __39_ and stare, but I don't let it get to me. I have applied to several modeling companies, and at least one company is considering me for jobs. Maybe I'll never __40_ posing on the runway, but I do know one thing: I'm done.
【小题1】
A.as B.when C.while D.before
【小题2】
A.applauding B.cheering C.laughing D.quarreling
【小题3】
A.modeling B.writing C.drilling D.acting
【小题4】
A.in spite of B.in view of C.in terms of D.in front of
【小题5】
A.looked into B.searched for C.wondered aboutD.glanced at
【小题6】
A.presented B.sent C.rushedD.handed
【小题7】
A.hurtB.beat C.disappointed D.puzzled
【小题8】
A.for B.like C.on D.after
【小题9】
A.impressB.make C.consult D.defeat
【小题10】
A.effect B.phenomenon C.challenge D.scene
【小题11】
A.forced B.expected C.reminded D.preferred
【小题12】
A.apologize B.beg C.hide D.complain
【小题13】
A.consider B.imagine C.appreciate D.resist
【小题14】
A.hardly B.ever C.even D.gradually
【小题15】
A.blanket B.bed C.chair D.mirror
【小题16】
A.while B.though C.but D.because
【小题17】
A.right B.still C.therefore D.anyhow
【小题18】
A.sensitive B.uncomfortable C.different D.tense
【小题19】
A.compare B.associate C.wave D.whisper
【小题20】
A.give up B.end up C.put up D.set up

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下表列出了1~18号元素的原子序数和元素符号.请回答下列问题:
原子序数 1 2 3 4 5 6 7 8 9
元素符号 H He Li Be B C N O F
原子序数 10 11 12 13 14 15 16 17 18
元素符号 Ne Na Mg Al Si P S Cl Ar
(1)某元素的原子结构示意图为,它在化学反应中一般易
得到
得到
电子(选填“得到”或“失去”).
(2)某粒子的结构示意图为,当x-y=8时,该粒子为
阴离子
阴离子
(选填“原子”、“阳离子”或“阴离子”),该粒子的符号为
S2-
S2-

(3)具有相同原子数和电子数的分子或离子叫等电子体,等电子体具有相似的结构和性质.下列各组粒子中属于等电子体的是
BD
BD
(填字母序号).
A.NO和O2 B.CO和N2 C.SO2和CO2 D.P
O
3-
4
S
O
2-
4

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