当前位置:首页>学习笔记>【26版物理步步高人教版学习笔记选择性必修第三册第二章章末素养提升

【26版物理步步高人教版学习笔记选择性必修第三册第二章章末素养提升

  • 2026-03-07 07:54:57
【26版物理步步高人教版学习笔记选择性必修第三册第二章章末素养提升

物理

观念

温度和

温标

(1)热平衡的特点:一切达到热平衡的系统都具有相同的

(2)热力学温度与摄氏度的关系:T=t+

气体实

验定律

(1)等温变化的规律:

(2)等容变化的规律:

(3)等压变化的规律:

理想气体

(1)理想气体:严格遵从的气体。实际气体在压强,温度时可以看成理想气体

(2)理想气体特点:分子间的相互作用力和分子势能

(3)理想气体的状态方程:(质量一定)

固体和

固体材料

(1)固体分为,晶体分为

(2)晶体的微观结构

(3)新材料及应用:液晶、半导体材料、纳米材料

液体

(1)表面张力:使液体表面张紧、具有的趋势,使液体的表面积趋向

(2)浸润和不浸润、毛细现象

科学

思维

1.能建立理想气体模型,知道将实际气体看成理想气体的条件

2.能用气体等温变化、等容变化和等压变化规律解决常见的实际问题

3.能用分子动理论和统计观点解释气体实验定律

科学

探究

能对一定质量的温度不变的气体压强和体积关系提出相关问题或猜想

探究压强和体积之间的关系,并体会作p-图像的必要性

科学态度

与责任

通过气体、固体和液体的学习和研究,领会科学、技术、社会、环境之间的密切联系,逐渐形成探索自然的内在动力

1(多选)关于固体和液体,下列说法中正确的是(  )

A.慢慢向小茶杯中注水,即使水面稍高出杯口,水仍不会流下来,此现象与液体的表面张力有关

B.具有各向同性的物质一定没有确定的熔化温度

C.某种液体与固体接触,当固体分子对液体分子的吸引力大于液体分子之间的吸引力时,该液体浸润固体

D.液晶的物理性质稳定,外界条件的变动不会引起液晶分子排列变化

2(多选)如图所示是一定质量的理想气体的p-V图像,气体状态从ABCDA完成一次循环,AB(图中实线)和CD均为等温过程,温度分别为T1T2。下列判断正确的是(  )

A.DA为等容过程,BC为等压过程

B.T1>T2

C.AB过程中,若VB=2VA,则pB=2pA(VApAVBpB分别为AB两点的体积和压强)

D.若气体状态沿图中虚线由AB变化,则气体的温度先升高后降低

处理图像问题应注意以下几点:

(1)看清坐标轴,理解图像的意义。

(2)观察图像,弄清图像中各量的变化情况,看是否属于特殊变化过程,如等温变化、等容变化或等压变化。

(3)若不是特殊过程,可在坐标系中作特殊变化的图像(如等温线、等容线或等压线),实现两个状态的比较。

3(2024·安徽卷)某人驾驶汽车,从北京到哈尔滨,在哈尔滨发现汽车的某个轮胎内气体的压强有所下降(假设轮胎内气体的体积不变,且没有漏气,可视为理想气体)。于是在哈尔滨给该轮胎充入压强与大气压相同的空气,使其内部气体的压强恢复到出发时的压强(假设充气过程中,轮胎内气体的温度与环境相同,且保持不变)。已知该轮胎内气体的体积V0=30 L,从北京出发时,该轮胎气体的温度t1=-3 ,压强p1=2.7×105 Pa。哈尔滨的环境温度t2=-23 ,大气压强p01.0×105 Pa。求:

(1)在哈尔滨时,充气前该轮胎气体压强的大小;

(2)充进该轮胎的空气体积。

________________________________________________________________________________________________________________________________________________________________________________________4(2023·贵州文德民族中学月考)氧气瓶是医院、家庭护理、战地救护、个人保健及各种缺氧环境补充用氧较理想的供氧设备。某氧气瓶容积V1=15 L,在T1=300 K的室内测得瓶内氧气的压强p1=9×106 Pa,已知当钢瓶内外无气压差时供气停止。

(1)求在环境温度为T1=300 K、压强为p0=1×105 Pa时,该氧气瓶可放出氧气的体积V

(2)若将该氧气瓶移至T2=250 K的环境中用气,当瓶内氧气压强变为p2=1.5×106 Pa时,求用掉的氧气的质量与原有的氧气的质量之比。(用百分比表示)

________________________________________________________________________________________________________________________________________________________________________________________

对于变质量问题,直接应用气体实验定律或理想气体状态方程显然不合适,关键是如何灵活选择研究对象,将变质量问题转化为定质量问题,可取原有气体为研究对象,也可以选择剩余气体为研究对象,但始末状态参量必须对应为同一部分气体。可想象放出漏掉的气体与剩余气体的状态相同,将变质量问题转化为定质量问题,然后利用理想气体的状态方程,就可以确定剩余气体与放出漏掉气体的体积、质量关系,从而确定剩余气体和原有气体间的状态变化关系。

5(2023·芜湖市高二期末)如图所示,一端封闭粗细均匀的U形导热玻璃管竖直放置,封闭端空气柱的长度L=50 cm,管两侧水银面的高度差为h=19 cm,大气压强恒为76 cmHg

通过网盘分享的文件:【学生用书Word版文档】整书等6个文件

链接: https://pan.baidu.com/s/1WrqhWD388uzcm3Z1gXKHEA?pwd=4321 提取码: 4321 

--来自百度网盘超级会员v8的分享

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  1. CONNECT:[ UseTime:0.000479s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000704s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000653s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000265s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000493s ]
  6. SELECT * FROM `set` [ RunTime:0.000212s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000522s ]
  8. SELECT * FROM `article` WHERE `id` = 472780 LIMIT 1 [ RunTime:0.000702s ]
  9. UPDATE `article` SET `lasttime` = 1772853179 WHERE `id` = 472780 [ RunTime:0.005644s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.002904s ]
  11. SELECT * FROM `article` WHERE `id` < 472780 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001731s ]
  12. SELECT * FROM `article` WHERE `id` > 472780 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001153s ]
  13. SELECT * FROM `article` WHERE `id` < 472780 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004523s ]
  14. SELECT * FROM `article` WHERE `id` < 472780 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002255s ]
  15. SELECT * FROM `article` WHERE `id` < 472780 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003678s ]
0.121270s