1.计算题- (共1题)
1.
把6.5g锌粒放入100g稀硫酸溶液中，恰好完全反应。（提示：锌与稀硫酸反应的化学方程式：Zn+H2SO4 ＝ZnSO4 +H2↑）求：
①反应后生成氢气多少克？_____
②参加反应的稀硫酸的溶质质量分数_____？
③反应后所得溶液的质量_____？
①反应后生成氢气多少克？_____
②参加反应的稀硫酸的溶质质量分数_____？
③反应后所得溶液的质量_____？
2.单选题- (共5题)
3.
形成化学观念是化学学习的任务之一。下列说法中错误的是（ ）
| A．分子、原子、离子都是构成物质的微粒 |
| B．物质与氧气的反应一定是氧化反应 |
| C．化学变化的过程实质上是原子重新组合的过程 |
| D．含有氧元素的化合物一定是氧化物 |
4.
人体吸入的O2有2%转化为活性氧，它加速人体衰老，被称为“夺命杀手”。我国科学家尝试用Na2SeO3清除人体内的活性氧，Na2SeO3中的Se（硒）元素的化合价是
| A．＋2 | B．＋4 | C．＋6 | D．－2 |
3.选择题- (共2题)
7.阅读下列短文，从每题所给的四个选项中，选出最佳选项。
C
There are an extremely large number of ants worldwide. Each individual ant hardly weigh anything, but together they weigh almost the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops or around the Antarctic. For animals their size, ants have been surprisingly successful, largely due to their wonderful social conduct.
In groups that vary in size from a few hundred to tens of millions, they organize their lives with a clear distribution of labor. Even more amazing is how they achieve this level of organization. While we use sound and sight to communicate, ants depend mostly on pheromone (信息素), which is a kind of chemical released by individuals and smelled or tasted by fellow members of a group. When an ant finds food, it produces a pheromone that will lead others straight to where the food is. When an ant comes under attack or is dying, it sends out an alarm pheromone to warn the whole group to prepare for a defensive fight.
In fact, when it comes to the art of war, ants have no equal. They are completely fearless and will take on an animal much larger than themselves, attacking in large groups and beating their target. They show so much devotion to their group that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
United and devoted, these little animals have survived on the earth for more than 140 million years, far longer than dinosaurs. Because they think as one, they have a united intelligence greater than you would expect from one small individual ant.
C
There are an extremely large number of ants worldwide. Each individual ant hardly weigh anything, but together they weigh almost the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops or around the Antarctic. For animals their size, ants have been surprisingly successful, largely due to their wonderful social conduct.
In groups that vary in size from a few hundred to tens of millions, they organize their lives with a clear distribution of labor. Even more amazing is how they achieve this level of organization. While we use sound and sight to communicate, ants depend mostly on pheromone (信息素), which is a kind of chemical released by individuals and smelled or tasted by fellow members of a group. When an ant finds food, it produces a pheromone that will lead others straight to where the food is. When an ant comes under attack or is dying, it sends out an alarm pheromone to warn the whole group to prepare for a defensive fight.
In fact, when it comes to the art of war, ants have no equal. They are completely fearless and will take on an animal much larger than themselves, attacking in large groups and beating their target. They show so much devotion to their group that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
United and devoted, these little animals have survived on the earth for more than 140 million years, far longer than dinosaurs. Because they think as one, they have a united intelligence greater than you would expect from one small individual ant.
8.阅读下列短文，从每题所给的四个选项中，选出最佳选项。
C
There are an extremely large number of ants worldwide. Each individual ant hardly weigh anything, but together they weigh almost the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops or around the Antarctic. For animals their size, ants have been surprisingly successful, largely due to their wonderful social conduct.
In groups that vary in size from a few hundred to tens of millions, they organize their lives with a clear distribution of labor. Even more amazing is how they achieve this level of organization. While we use sound and sight to communicate, ants depend mostly on pheromone (信息素), which is a kind of chemical released by individuals and smelled or tasted by fellow members of a group. When an ant finds food, it produces a pheromone that will lead others straight to where the food is. When an ant comes under attack or is dying, it sends out an alarm pheromone to warn the whole group to prepare for a defensive fight.
In fact, when it comes to the art of war, ants have no equal. They are completely fearless and will take on an animal much larger than themselves, attacking in large groups and beating their target. They show so much devotion to their group that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
United and devoted, these little animals have survived on the earth for more than 140 million years, far longer than dinosaurs. Because they think as one, they have a united intelligence greater than you would expect from one small individual ant.
C
There are an extremely large number of ants worldwide. Each individual ant hardly weigh anything, but together they weigh almost the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops or around the Antarctic. For animals their size, ants have been surprisingly successful, largely due to their wonderful social conduct.
In groups that vary in size from a few hundred to tens of millions, they organize their lives with a clear distribution of labor. Even more amazing is how they achieve this level of organization. While we use sound and sight to communicate, ants depend mostly on pheromone (信息素), which is a kind of chemical released by individuals and smelled or tasted by fellow members of a group. When an ant finds food, it produces a pheromone that will lead others straight to where the food is. When an ant comes under attack or is dying, it sends out an alarm pheromone to warn the whole group to prepare for a defensive fight.
In fact, when it comes to the art of war, ants have no equal. They are completely fearless and will take on an animal much larger than themselves, attacking in large groups and beating their target. They show so much devotion to their group that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
United and devoted, these little animals have survived on the earth for more than 140 million years, far longer than dinosaurs. Because they think as one, they have a united intelligence greater than you would expect from one small individual ant.
4.填空题- (共1题)
9.
按要求从水、铁、氧化铜、氧气、氢气、氮气中选择合适的物质，将其化学式填写在下列空格中。
①一种清洁高效的能源_____；
②充入食品袋中可做防腐剂的气体_____；
③最常用的溶剂_____；
④可广泛用于建筑材料的金属_____；
⑤一种金属氧化物_____。
①一种清洁高效的能源_____；
②充入食品袋中可做防腐剂的气体_____；
③最常用的溶剂_____；
④可广泛用于建筑材料的金属_____；
⑤一种金属氧化物_____。
5.实验题- (共2题)
10.
小明同学欲通过实验研究化学反应中的质量变化，确定以“稀盐酸与碳酸钙反应”为研究对象，设计的实验装罝如图所示。（提示：稀盐酸与碳酸钙反应会生成水、氯化钙和二氧化碳气体）
①根据实验目的，小明应该测量的数据是_____（填“只有反应前”“只有反应后”“反应前、后”之一）整个反应装罝（包括烧杯、试管和药品）的质量。
②实验步骤如下：如图方式放好仪器，使天平平衡，记录称量数据。将试管中的稀盐酸全部倒入烧杯中。当反应结束时，小明发现天平的指针已经_____偏了（“向左”或“向右”之一）。产生该现象的原因是_____。
③该反应_____（填“符合”、“不符合”之一）质量守恒定律。
④欲使托盘天平平衡，可以对该装置做的改进是_____。
①根据实验目的，小明应该测量的数据是_____（填“只有反应前”“只有反应后”“反应前、后”之一）整个反应装罝（包括烧杯、试管和药品）的质量。
②实验步骤如下：如图方式放好仪器，使天平平衡，记录称量数据。将试管中的稀盐酸全部倒入烧杯中。当反应结束时，小明发现天平的指针已经_____偏了（“向左”或“向右”之一）。产生该现象的原因是_____。
③该反应_____（填“符合”、“不符合”之一）质量守恒定律。
④欲使托盘天平平衡，可以对该装置做的改进是_____。
试卷分析
-
【1】题量占比
计算题:(1道)
单选题:(5道)
选择题:(2道)
填空题:(1道)
实验题:(2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：0
5星难题：0
6星难题：2
7星难题：0
8星难题：3
9星难题：4