1.科学探究题- (共1题)
（查阅资料）2Na2O2+2CO2=2Na2CO3+O2
2Na2O2+2H2O=2NaOH+O2↑
（提出猜想）根据呼出的气体中含有较多的 ．对白色固体作出如下猜想：
猜想Ⅰ：氢氧化钠猜想Ⅱ：碳酸钠猜想Ⅲ：氢氧化钠和碳酸钠
（实验验证）
（得出结论）猜想Ⅲ成立．
（拓展应用）“氧气再生剂”的保存方法是 ．
2.简答题- (共1题)
（1）生产氢气 g；
（2）稀硫酸中H2SO4的质量是g；
（3）合金中铜的质量分数是多少？
3.单选题- (共15题)
| A．因为碱溶液呈碱性，所以呈碱性的溶液一定是碱溶液 |
| B．金属铝与盐酸反应生产AlCl3和H2，所以金属铁与盐酸反应生产FeCl3和H2 |
| C．因为燃烧需要同时满足三个条件，所以灭火也要同时控制这三个条件 |
| D．因为蜡烛燃烧生成二氧化碳和水，所以蜡烛中一定含有碳元素和氢元素 |
| A．柠檬酸属于氧化物 |
| B．柠檬酸是由6个碳原子、8个氢原子和7个氧原子组成的 |
| C．柠檬酸中氧元素的质量分数最大 |
| D．柠檬酸中碳、氢、氧三种元素的质量比为6：8：7 |
| A．用灼烧闻气味的方法区分羊毛线和棉线 |
| B．用碳酸氢钠治疗胃酸过多 |
| C．用燃烧的小木条放入集气瓶内来检验二氧化碳是否集满 |
| D．用肥皂水涂在蚊虫叮咬处止痒 |
| A．大量使用农药、化肥，不会造成水体污染 |
| B．水通过三态变化实现天然循环 |
| C．水是生命之源，保护水资源包括防止水体污染和节约用水两方面 |
| D．随意丢弃废电池易造成水土重金属污染 |
加热液体
稀释浓硫酸
蒸发食盐水
铁丝在氧气中燃烧| A．敞开浓盐酸试剂瓶口冒出白雾 |
| B．用pH试纸测得某溶液的pH=1.4 |
| C．铵态氮肥与碱共热放出无色无味气体 |
| D．马铃薯片遇到碘酒后颜色不变 |
| 选项 | 物质（括号内为杂质） | 试剂 | 操作方法 |
| A | NaCl溶液（Na2CO3） | Ca（OH）2溶液 | 过滤 |
| B | KNO3（NaCl） | H2O | 蒸发、过滤 |
| C | N2（O2） | 足量铜粉 | 加热 |
| D | 稀硫酸（稀盐酸） | 适量氯化钡溶液 | 过滤 |
| A．A | B．B | C．C | D．D |
4.选择题- (共2题)
A. show me the building, B. was rising , C. make a living, D. could hardly sleep E. took my taxi F. pay you |
Twenty years ago, I drove a taxi for a living. One time in the middle of the night, an old lady in her 80s {#blank#}1{#/blank#} . She gave me an address, and then asked, “Could you {#blank#}2{#/blank#}?”
“It's not the shortest way,” I answered quietly .
“Oh, I don't mind,” she said. “I'm in no hurry. I'm on my way to a hospice(临终医院). I {#blank#}3{#/blank#} The doctor says I don't have very long.”
I quickly reached over and shut off the meter(计价器). For the next two hours, we drove through the city. She{#blank#}4{#/blank#}where she had once worked, the neighborhood where she had lived, the place where she danced as a girl. As sun {#blank#}5{#/blank#}, we got to the hospice.
“How much should I {#blank#}6{#/blank#}?” she asked, reaching into her purse.
“Nothing ” I said.
“You have to{#blank#}7{#/blank#} ” she answered.
“Oh, there are other passengers,” I answered.
“You gave an old woman some moment of happiness”. She said: “Thank you.”
I drove into the fine morning light. Behind me, a door shut. It was the sound of closing of a life. I drove aimlessly, lost in thought. For the rest of the day, I {#blank#}8{#/blank#}. What if that woman had got an unfriendly drive, or one who was impatient to his shift? What if I had refused to take the run?
A. show me the building, B. was rising , C. make a living, D. could hardly sleep E. took my taxi F. pay you |
Twenty years ago, I drove a taxi for a living. One time in the middle of the night, an old lady in her 80s {#blank#}1{#/blank#} . She gave me an address, and then asked, “Could you {#blank#}2{#/blank#}?”
“It's not the shortest way,” I answered quietly .
“Oh, I don't mind,” she said. “I'm in no hurry. I'm on my way to a hospice(临终医院). I {#blank#}3{#/blank#} The doctor says I don't have very long.”
I quickly reached over and shut off the meter(计价器). For the next two hours, we drove through the city. She{#blank#}4{#/blank#}where she had once worked, the neighborhood where she had lived, the place where she danced as a girl. As sun {#blank#}5{#/blank#}, we got to the hospice.
“How much should I {#blank#}6{#/blank#}?” she asked, reaching into her purse.
“Nothing ” I said.
“You have to{#blank#}7{#/blank#} ” she answered.
“Oh, there are other passengers,” I answered.
“You gave an old woman some moment of happiness”. She said: “Thank you.”
I drove into the fine morning light. Behind me, a door shut. It was the sound of closing of a life. I drove aimlessly, lost in thought. For the rest of the day, I {#blank#}8{#/blank#}. What if that woman had got an unfriendly drive, or one who was impatient to his shift? What if I had refused to take the run?
5.填空题- (共5题)
（1）“Co”表示_______元素（填名称）；
（2）“CO”是由______两种元素（填名称）组成的_____（填“单质”或“化合物”）．
（1）图甲是金属钠与氯气反应生成氛化钠的微观示意图．由图甲可知，原子在化学反应中的表现主要是由原子的（填序号）决定的．
| A．最外层电子数 | B．核外电子数 |
| C．电子层数 | D．质子数 |
原子得到或失去电子后转变成的也是构成物质的一种基本粒子．
（2）图乙是氢氧化钠溶液与盐酸反应的微观示意图．该反应的实质是结合生成水．
（1）将水样经过沉降、过滤、___、杀菌消毒等步骤，可初步净化为自来水。
（2）通入氯气杀菌消毒，发生的反应为：Cl2+H2O=HCl+HClO（次氯酸）。请判断次氯酸（HClO）中氯元素的化合价为_____。
（3）含有较多的可溶性钙、镁矿物质的天然水称为_____。
（4）铁制品在空气中锈蚀的实质就是铁与空气中的_____（填序号）等发生了化学反应。
|
（1）10℃时，甲物质的溶解度 乙物质的溶解度。（填“＞”或“=”或“＜”）
（2）把30℃时等质量的甲、乙两物质饱和溶液降温到10℃，析出晶体较多的是 。
（3）20℃时，将50g甲物质放入盛有100g水的烧杯中，最终所得溶液的质量为 g；若将烧杯内物质升温到30℃（不考虑水蒸发），溶液中不变的是 （填序号）。
| A．溶剂的质量 | B．溶液的质量 | C．溶质的质量分数 | D．以上都不变 |
-
【1】题量占比
科学探究题:(1道)
简答题:(1道)
单选题:(15道)
选择题:(2道)
填空题:(5道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：2
5星难题：0
6星难题：7
7星难题：0
8星难题：9
9星难题：4