1.计算题- (共2题)
(1)二氧化硅的相对分子质量 ;
(2)二氧化硅中硅、氧元素质量比为 : 。
(1)该石灰石样品中碳酸钙的质量是多少?
(2)反应后所得溶液的溶质质量分数为多少?(计算结果保留一位小数)
2.单选题- (共4题)
A.131 | B.53 | C.209 | D.78 |
A.尼古丁 | B.一氧化碳 | C.二氧化硫 | D.二氧化碳 |

A.t2℃时,X和Y两种物质的饱和溶液溶质质量分数相同 |
B.t1℃时,三种物质溶解度从大到小的顺序是Y、Z、X |
C.Z物质的溶解度受温度影响较小 |
D.t3℃时,在100g的水里分别加入三种物质各mg,只有X能形成饱和溶液 |

A.将一定质量的硝酸钾不饱和溶液恒温蒸发水分,直至有少量晶体析出 |
B.常温下,相同质量的锌和铁分别与足量的溶质质量分数相同的稀硫酸充分反应 |
C.向硫酸和硫酸铜的混合溶液中加入氢氧化钠溶液直至过量 |
D.服用胃舒平[主要成分Al(OH)3]治疗胃酸过多 |
3.选择题- (共5题)
An artist goes to a beautiful part of the country for a holiday and stays with a farmer. Every day he goes out with his paints and brushes and paints until evening. When it gets dark he goes back to the farm and has a good dinner before he goes to bed.
At the end of his holiday he wants to pay the farmer, but the farmer says, "No, I don't want money. But give me one of your pictures. What's money? In a week it will be finished, but your picture will still be there.”
The artist is very happy and thanks the farmer for saying so about his pictures. The farmer smiles and answers, "It's not that. I have a son in London. He wants to be an artist. When he comes home next month, I will show him your picture, and he will not want to be an artist any more, I think."
Every day, life is made and lost. Every day, life goes on. Every day we experience some of the most important parts of life and may not even realize it: love, generosity, and perseverance. These values aren't just important to us, they make the world what it is.
Scientists say that the gravity makes the world turn, but some people say that love makes it go around. Love can be found anywhere: in families, friends, even strangers. Even if you can't see it, you know it's there.
Love may connect people all over the world, but what would the world be without generosity? Whether after a national disaster or a school fund raiser, one thing is certain--- it is better to give than to receive. Generosity is found everywhere and whether it's a large or small act, it makes a difference. Most of all, generosity is not something you need any qualifications(资格)for, and no matter what you do, it can make a difference. Sometimes, though, it takes effort to be generous, which leads us to perseverance.
Founding a country, riding a bike, or finishing a novel, these are all finished with perseverance. Perseverance is the one thing that can help us achieve whatever we want. It is what helps scientists discover cures for illnesses, and athletes become winners. You may fail, but every time you make a mistake, that's one less to make the next time.
There is an infinite(无限的) number of things we value. But without love, generosity, and perseverance, we just don't think that our lives or the world would be the way it is.
— Excuse me, but could you tell me when the banks will be open today?
—_______. It's a public holiday.
Simon usually plays_______ guitar on Sunday morning and plays_______ chess on Sunday afternoon.
4.填空题- (共4题)

(1)该元素的原子有 个电子层, X的值为 。
(2)该元素的化学性质与下列 (填序号)元素的化学性质最相似。

A B C D
(3)写出该元素的原子在化学反应中容易形成的离子的符号 。
(1)你认为下列措施与水环境治理无关的是 (填序号):
①全部拆除、取缔涪江沿岸的经营性茶船;
②在涪江沿岸铺设雨污管道;
③取消沿江两岸生活污水、工业废水排污口,新建污水处理厂;
④修建涪江沿岸景观带;
⑤禁止沿岸居民在湖里洗衣物。
(2)我市城区居民用水主要来自观音湖。自来水厂通过对湖水进行沉降、 、灭菌这几步处理后,再输送到千家万户。
(3)硬水是指含较多可溶性钙、镁化合物的水。天然水大多是硬水,它直接使用会给我们生活带来很多不便。区分硬水和软水时可用 来检验。
(实验方案)

(推断和结论)
(1)若现象a为有气泡产生,则加入的A溶液可能是 ,说明氢氧化钠已经变质。
(2)为了进一步探究该产品变质的程度,再取少量样品,加入的A是过量的CaCl2溶液(CaCl2溶液呈中性),现象a为有白色沉淀,现象b为无色酚酞试液变红色,则证明该批产品 (填“部分”或“完全”)变质。
(反思)久置的氢氧化钠变质的原因是(用化学方程式表示)________________
5.实验题- (共1题)
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【1】题量占比
计算题:(2道)
单选题:(4道)
选择题:(5道)
填空题:(4道)
实验题:(1道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:3
7星难题:0
8星难题:1
9星难题:4