物理化学实验考试

物理化学实验考试 2014年初中实验操作考试(物理、化学学科 ) 物理试题(一) 学校: 姓名: 考号: 桌号: 实验名称:探究影响滑动摩擦力大小的因素 一、提出问题: 一个物体在另一个物体表面上滑动时受到阻碍物体相对运动的力叫滑动摩擦力，如图1所示，演奏二胡时，弓弦与琴弦的相对运动就存在着摩擦。那么滑动摩擦力的大小与哪些因素有关呢, 二、猜想与假设 图1 三、实验 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 1、写出实验的步骤 ? 如图2(a)所示，把玻璃板固定在桌面 上，用弹簧测力计水平拉动木板，使木板在玻璃 板上做 运动，记下弹簧测力示数。 ?如图2(b)所示，将毛巾铺在桌面上，重 复前面的实验。同a比较，在保持 不变的 情况下，研究滑动摩擦力与接触面的粗糙程度是 否有关。 仿照?、?步骤，完成?、?。 ? ? 2、选择器材 参考实验器材:弹簧测力计、玻璃板、带钩的小木块、毛巾、一些重物(如墨水瓶、小辞典、钩码等)。 你选择的实验器材: 。 3、设计表格 记录 混凝土 养护记录下载土方回填监理旁站记录免费下载集备记录下载集备记录下载集备记录下载 数据 实验条件 步骤 弹簧测力计示数F/ N 接触面情况 压力情况 1 2 3 4 四、进行实验与收集证据 在进行实验的同时，将实验数据记录在表格中。 五、实验结论 滑动摩擦力的大小与 和 有关。压力越大，接触面越粗糙，滑动摩擦力越 。 六、评估 本实验采用了怎样的研究物理问题的方法,你认为实验过程应该特别注意的事项是什么, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 物理试题(二) 学校: 姓名: 考号: 桌号: 实验名称:探究并联电路的干路和支路电流间有什么关系 一、提出问题 电路连接的基本方式是串联和并联，在串联电路中各处的电流都相等，那么并联电路干路和支路电流间有什么关系呢, 二、猜想与假设: 三、实验步骤 1.画出实验电路图 B 参考电路图:如图1所示 A ? ? ? ? ? C 图1 2.实验步骤 参考实验步骤 (1)照图1所示的电路连接好电路。 (2)把电流表接在电路的A处，经检查连接无误后，合上开关，测出A处的电流I。 A (3)再把电流表分别接在电路中的B处和C处，测量出两支路中的电流值I和I。 BC 你设计的实验步骤: 3、实验器材(有如下器材供你选择，缺少的器材可自行补充) 电池夹2个、两节干电池(或其他电源)、一只电流表、两个小灯泡、一个开关、导线若干条。 你选择的器材: 。 4.设计表格记录数据 电流表的位置 电流表的示数I/A A B C 四、进行实验与收集证据 在进行实验的同时，将有关数据填入表格中。 五、分析与论证 分析实验数据，可得出的结论是 。 六、评估 你的假设是否与实验结论一致,实验步骤是否合理,实验操作是否规范,结论是否可靠,实验误差产生的原因是什么, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 物理试题(三) 学校: 姓名: 考号: 桌号: 实验名称: 探究凸透镜成像 一、提出问题 凸透镜既能成正立放大的像(如图1)，也能成倒立放大的像(如图2)。在灯泡和墙壁间移动凸透镜，可在墙上得到放大、缩小或等大的灯丝像，也可能在墙上 看不见像。那么凸透镜成像与什么因素有关呢, 二、猜想与假设 图1 图2 ________________________________________________________________________ 凸透镜 三、实验方案 光屏 1.写出实验步骤 烛 ?.按照图3将器材安装在光具座上，点燃蜡烛， 焰 使烛焰、凸透镜、光屏的中心在同一高度上。 ?._________________________________________ 光具座 图3 ?.________________________________________________________________________ 2.实验器材_________________________________________________________________ 3.设计表格记录数据: (凸透镜焦距f ) 实验次数 像的大小 像的正倒 像的虚实 物距u/cm 像距v/cm 1 2 3 4 5 四、实验操作 在进行实验的同时，将实验数据填入表格中。 五、分析得出结论 ?.当物距大于2倍焦距时，在凸透镜的另一侧得到一个___________、_____________的____________像。 ?.当物距等于2倍焦距时，在凸透镜的另一侧得到一个___________、______________的______________像。 ?当烛焰在2倍焦距和焦距之间时，在凸透镜的另一侧得到一个___________、______________的______________像。 ?.当物距小于焦距时，从光屏这一侧透过凸透镜可以观察到烛焰的像，这个像是___________、______________的______________像。 六、评估 你的假设是否与实验结论一致,实验步骤是否合理,操作是否规范?结论是否可靠, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 物理试题(四) 学校: 姓名: 考号: 桌号: 实验名称:用天平和量筒测定不规则石块的密度 一、实验要求 学习用天平和量筒测量固体密度的一种方法，根据有关测量数据，算出石块密度。 二、实验器材 参考实验器材:天平和砝码(量程200g)、天平和砝码(100g)、量筒(100ml)、石块、 烧杯(200ml)、水、细线等。 你选择的实验器材_________________________________________________________ ______________________________________________________________________。 三、实验方案 1.将漏缺的步骤补充完整 ?.调节天平平衡，测出石块的质量 ?.________________________________________________________________________ ?.用细线将石块拴好，将石块完全浸没在水中，读出石块和水的总体积V2 ?._________________________________________________________________________ ?.整理器材 2.设计表格记录实验数据(将漏缺项目不上) 石块的质量 石块和水的总体积 石块的密度 3 3 m/g V/cmρ/g.cm2 四、实验操作及收集数据 在进行实验的同时，将实验数据填入表格中。 五、实验结论 ____________________________________________________________________ ____________________________________________________________________. 六、评估 测石块的密度为什么先测质量后再测体积, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 物理试题(五) 学校: 姓名: 考号: 桌号: 实验名称:测定小灯泡的功率 一、提出问题 家用手电筒的小灯泡上只标有额定电压，怎样通过实验来测定一只额定电压为2.5V小灯泡的功率呢, 二、猜想与假设 ________________________________________________________________ ____________________________________________________________________ 三、实验方案 1.实验原理 2.实验电路图 参考电路图:如图1所示。 V A 你设计的电路图是: 图1 3.实验步骤 参考实验步骤: (1)画出实验电路图，如图1所示。 (2)根据电路图连接电路，并将滑动变阻器的触片置于阻值最大处。 (3)闭合开关，调节滑动变阻器，使电压表示数为2.5V，记下电压表和电流表的示数。 (4)调节滑动变阻器，使小灯泡两端电压为3V ，记下电压表和电流表的示数。 (5)调节滑动变阻器，使小灯泡两端电压为2V ，记下电压表和电流表的示数。 你设计的实验步骤是: 4.实验器材 (有如下器材供你选择，缺少的器材可自行补充)额定电压为2.5V 和3.8V 的小灯泡各一只，电压表、电流表各一只，滑动变阻器一只，干电池3节，电池夹3个，导线若干。 你选择的器材是_____________________________________________________________ ___________________________________________________________________________。 四、进行实验与收集数据 在进行实验的同时，将有关数据填入表格中。 小灯泡两端电压 通过灯丝的电流 小灯泡的电功率 物理量 灯泡发光情况 U/V I/A P/W 规 格 五、分析与论证 小灯泡的功率随着小灯泡两端的电压的增大而_______________，只有小灯泡两端电压为额定电压时，小灯泡的功率才是_________________，小灯泡才正常发光。 六、评估 你的实验步骤合理吗,实验结论可靠吗, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 物理试题(六) 学校: 姓名: 考号: 桌号: 实验名称:探究杠杆的平衡条件 一、提出问题 当杠杆在动力和阻力的作用下静止时，我们就说杠杆平衡了，那么，杠杆平衡时，动力、动力臂和阻力、阻力臂之间存在着怎样的关系呢, 二、猜想与假设 _________________________________________________________________________ 三、实验方案 1.用如图1所示的实验装置，探究动力、动力臂和阻力、阻力臂之间的关系。 参考实验步骤: (1)如图所示，固定杠杆使其在水平位置平衡。 (2)用线在杠杆支点左侧3cm处加挂两个钩码，在右侧2cm 处加挂钩码，使杠杆在水平位置重新平衡，这时杠杆两臂受到的作 用力的大小与钩码重力相等。 (3)把杠杆右臂受到的作用力当做动力F，左臂受到的作用力1 当作阻力F，量出杠杆平衡时的动力臂L和阻力臂L，把F、F、2121、2 L和L的数值填入表格中。 12 你的实验步骤是: 图1 2.实验器材有:杠杆(带刻度、有支点)、铁架台(带铁钩)、钩码一盒、线 你选择的器材是____________________________________________________________ ________________________________________________________ 3.设计表格记录数据 实验次数 1 2 3 四、进行实验与收集数据 在实验操作的同时，将有关数据填入表格中 五、分析与论证 将所测数据进行分析论证，得出结论_____________________________________________ 六、评估 为什么实验开始，首先对杠杆进行调平,杠杆在水平位置平衡有什么好处, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(一) 学校: 姓名: 考号: 桌号: 实验室制取氧气的探究 一、提出问题: 氧气是人类们生命活动所必需的一种物质，同学们一定很想知道氧气是怎样制得的。大量氧气通过工业生产来制取，少量的氧气可以在实验室里制取。那么，实验室里如何来制取氧气呢, 二、猜想与假设 三、实验方案 l、请你设计出一个合理可行的实验室里用高锰酸钾制取氧气的方案，操作尽量简单、可行。 2、选择所需药品和仪器(不当或缺乏者自选):试管、带导管的橡皮塞、酒精灯、铁架台、集气瓶、高锰酸钾、棉花。 四、实验操作与收集证据: 五、分析与论证 l、实验室里用加热高锰酸钾的方法制取氧气。试管口为什么略微向下倾斜,试管口附近为什么放一团棉花, 2、收集氧气可用 法和 法，原因 。 3、做铁丝燃烧的实验时，盛氧气的集气瓶中为什么预先加入少量细沙, loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(二) 学校: 姓名: 考号: 桌号: 水的净化的探究 一、提出问题 天然水(湖水、河水或井水等)都或多或少含有一些可溶性或不溶性的杂货，因而常呈现浑浊，不宜直接饮用，我们可以采用哪些方法对天然水进行净化处理呢, 二、猜想与假设 三、实验方案 l、请你设计出一个将天然水净化处理的方案，然后完成该实验的合理步骤。 2、选择所需药品和仪器(不当或缺乏者自选):方座支架(带铁圈)、烧杯、漏斗、滤纸、天然水、明矾。 四、进行实验与收集证据: 五、分析与论证 1、净化天然水时，使用净水剂明矾的作用是 。 2、过滤后的液体仍浑浊，请你分析造浑浊的可能原因 、 。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(三) 学校: 姓名: 考号: 桌号: 一定质量分数溶液的配制的探究 一、提出问题 在生产、生活和科学研究中，经常用到溶质质量分数一定的溶液。那么，如何配制一定溶质质量分数的溶液呢, 二、猜想与假设 三、实验方案 l、请你设计方案配制50g6%的NaCl溶液。 2、选择所需药品和仪器(不当或缺乏者自选):食盐、药匙、托盘天平、烧杯、量筒、玻璃棒。 四、实验操作与收集证据 五、分析与论证 1、在溶解氯化钠的过程中，玻璃棒所的作用是 。 2、用量筒量取一定体积的水时，量筒必须因 ，视线要与量筒内液体的 保持水平。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(四) 学校: 姓名: 考号: 桌号: 金属活动顺序的探究 一、提出问题 某些金属不仅能与氧气反应，而且还能与盐酸、稀硫酸或某些盐溶液反应。而且反应的剧烈程度不同，能否通过金属与酸或盐溶液反应的剧烈程度不同来判断金属的活动顺序, 二、猜想与假设 三、实验方案 l、请你设计实验判断: ?镁、锌、铁、铜的活动顺序 ?铝、铜、银的活动顺序 2、选择所需药品和仪器(不当或缺乏者自选):镁条、锌片、铝片、铁丝、铜丝、稀盐酸、稀硫酸、硫酸铜溶液、硫酸铝溶液、硝酸银溶液 四、进行实验与收集证据 五、分析与论证 由上述实验得出: 1.镁、锌、铁、铜的活动顺序是 。 2.铝、铜、银的活动顺序是 。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(五) 学校: 姓名: 考号: 桌号: 二氧化碳性质的探究 一、提出问题 你听说过“屠狗洞”的故事吗,在意大利某地有个奇怪的山洞，人过这个洞安然无恙，而狗走进山洞就一命呜呼了。你一定知道这是因为二氧化碳密度大、不能支持呼吸造成的。你还知道二氧化碳有哪些性质吗, 二、猜想与假设 三、实验方案 1.请你制取二氧化碳，并设计实验验证: ?二氧化碳的密度比空气大、不支持燃烧。 ?二氧化碳能溶于水且与水反应。 2.选择所需药品和仪器(不当或缺乏者自选):石灰石(或大理石)、稀盐酸、试管、烧杯、石蕊试液、蜡烛、塑料瓶 四、进行实验与收集证据 五、分析与论证 1.制取二氧化碳的装置与实验室用 制取氧气的装置相同。 2.二氧化碳与水反应的化学方程式是 。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 实验操作考试 化学试题(六) 学校: 姓名: 考号: 桌号: 实验名称:化学实验基本操作 一、提出问题 实验是化学学习的重要的探究过程和方法，规范的实验操作是保证实验成功的基础。初中化学基本实验操作有哪些,你能熟练操作这些基本操作吗, 二、猜想与假设 三、实验方案 1.实验内容 (1)取少量固体食盐放入试管。 (2)取两小块大理石放入试管。 (3)用托盘天平称量4.5g食盐。 (4)用量筒量取9mL蒸馏水并加热到沸腾。 2(实验用品:托盘天平、砝码、量筒(10mL、20mL各一个)、试管、胶头滴管、酒精灯、试管夹、盛蒸馏水的细口瓶、食盐、火柴 四、进行实验与收集证据 五、实验分析与论证 1(用纸槽将固体粉末送入试管内的原因是____________________________。 2.量取9mL蒸馏水要选择 mL，目的是 。 3(酒精灯使用完，要用灯冒盖灭，不能用嘴吹灭，目的是 。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: