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2015中考化学专题复习课件(五) 科学探究题

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中考化学专题复习 五科学探究题课件 科学探究题课件 中考化学专题 化学中考科学探究题专题复习 科学探究题专题复习 化学探究实验 中考化学专题复习课件 中考化学复习课件 中考化学总复习
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To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 专题突破(五) 科学探究题 考 点 聚 焦 考 点 聚 焦 归 类 示 例归 类 示 例 To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 专题突破(五)┃ 科学探究题 专 题 分 析 考点聚焦 归类示例 此类题目一般是以研究性小课题作为试题的内容和研究对象,以实验为研究手段,模拟科学 探究过程对小课题展开研究。试题通常按问题情境、知识视野和探究过程构建。题干中的文字一 般比较多,要回答的问题也比较多,因此科学探究题也是中考化学中的一个难点。 解题方法:在解答科学探究题时,应注意认真阅读全题,理解题中所给的“资料”内容,找到 所要解决的问题与“资料”内容的关系,以确定解题的思路、方法和途径。另外,我们在进行文字 表述时,要注意用词上的严谨性和简洁性,避免出现因词不达意或主观上的疏漏而导致失分。 To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 类型一 对化学反应过程及反应条件的探究 归 类 示 例 考点聚焦 归类示例 专题突破(五)┃ 科学探究题 例1 [2014·潍潍坊]某化学小组查阅资组查阅资 料得 知:在不同温度下,甲烷烷(CH4)可将氧化铁铁 (Fe2O3)还还原为为Fe、Fe3O4中的一种或两种。 他们为们为 探究甲烷烷与氧化铁铁反应应后产产物(黑色粉 末)的成分,进进行了如下实验实验 : To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 考点聚焦 归类示例 (1)按如图图Z5-1所示装置连连接好仪仪器,检查检查 装置的气密性后,往装置中添加药药品。 ①向黑色粉末中滴加稀硫酸,观观察到有气泡产产生,则则黑色粉末中含有________,产产生气 泡的化学方程式是____________________________________________________。 ②导导管b的作用是______________________。 (2)按如图图Z5-2所示装置连连接好仪仪器(图图中夹夹持设备设备 已略去),检查检查 装置的气密性,往装 置中添加药药品。打开止水夹夹K,通入含有少量二氧化碳的一氧化碳,持续续一段时间时间 后再点 燃装置C处处的酒精喷喷灯。 专题突破(五)┃ 科学探究题 Fe Fe+H2SO4===FeSO4+H2↑ 使仪仪器中a、c处压处压 强相等 To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 考点聚焦 归类示例 专题突破(五)┃ 科学探究题 ①装置A中反应应的化学方程式为为__________________________________________,装置B 中浓浓硫酸的作用是__________________。 ②持续续一段时间时间 后再点燃装置C处处的酒精喷喷灯的原因是 ______________________________________。D装置的作用是__________________。 2NaOH+CO2===Na2CO3+H2O 干燥CO 赶走装置中的空气,防止发发生爆炸 防止E中的石灰水被倒吸进进玻璃管 To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 考点聚焦 归类示例 专题突破(五)┃ 科学探究题 ③实验实验 中观观察到装置E中石灰水变浑浊变浑浊 ,则则黑色粉末中含有______________。尾气处处理 方法为为________________。 将尾气点燃 Fe3O4 [方法点拨] 化学反应中,反应的条件将直接影响反应过程,同时反应过程还会受到多种 因素的影响,如催化剂的种类、反应的环境等,做此类型探究题时要注意这些因素的变化。 To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform is still the focus of this year's “two sessions.“ Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency and raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the welfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this year's deep reform 类型二 对实验或生活中一些现象的探究 考点聚焦 归类示例 例2 [2014·安徽]某研究性学习习小组组在验证验证 “碱使酚酞酞溶液变红变红 ”的实验时实验时 ,发现发现 一个意外 现现象:将酚酞酞溶液滴入某NaOH溶液中,溶液变变成了红红色,可是过过一会儿红红色却消失了。 [提出问题问题 ]是什么原因导导致滴有酚酞酞的NaOH溶液由红红色褪为为无色? [猜想与假设设] 他们们分别对这别对这 种意外现现象作如下猜想: 甲同学:可能是酚酞酞与O2发发生了反应应; 乙同学:可能是NaOH溶液与空气中的CO2发发生了反应应; 丙同学:可能与NaOH溶液浓浓度大小有关; 你认为认为 可能还还与________________________________有关(写一条即可)。 专题突破(五)┃ 科学探究题 滴入酚酞酞的多少(或溶液的温度变变化或氢氢氧化钠钠溶液中含有 其他杂质杂质等,合理均可) To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for further promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At
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