实验记录英文写作模板
实验报告模板英语
Title: [Experiment Name]Objective:To [state the objective of the experiment], using [briefly describe the experimental setup or method].Introduction:The purpose of this experiment is to [provide a brief background on the experiment and its significance]. In this experiment, we will [describe the experimental procedure and the expected outcomes]. The theoretical background for this experiment is [briefly explain the relevant theories or principles].Materials and Methods:1. Materials:- [List all the materials used in the experiment, including chemicals, equipment, and apparatus.]2. Apparatus:- [List all the apparatus used, such as beakers, pipettes, spectrophotometer, etc.]3. Procedure:- [Describe the steps taken during the experiment in chronological order. Include any safety precautions or special instructions.]4. Data Collection:- [Explain how data was collected during the experiment. Include any measurements taken, observations made, or other relevant information.]Results:1. Raw Data:- [Present the raw data collected during the experiment in tables, graphs, or figures.]2. Analysis:- [Discuss the data collected, including any calculations performed or statistical analysis conducted.]Discussion:1. Comparison with Theoretical Predictions:- [Compare the experimental results with the theoretical predictions or known values, explaining any discrepancies.]2. Possible Sources of Error:- [Identify and discuss any potential sources of error in the experiment, including procedural, equipment, or environmental factors.]3. Implications and Limitations:- [Discuss the implications of the results and any limitations of the experiment.]Conclusion:The objective of this experiment was to [state the objective again briefly]. The results indicate that [state the main findings of the experiment]. The experiment was successful in achieving the intended objective, [if applicable], and the data collected support the [relevant theories or hypotheses]. Further studies could include [suggestions for future research].References:[Include any references cited in the report, formatted according to the required citation style.]Appendices:[Include any additional information, such as detailed calculations, additional graphs, or photos, that may be helpful for understanding the experiment.]---Note:This is a basic template for a laboratory report. Depending on the specific requirements of your course or instructor, you may need to adjust the format, content, or sections of the report.。
实验记录英文写作模板
Sentence Template for Notebook and Report WritingPfizer Project Management TeamApril 12, 2007Part 1: 反应前的装置描述1.1: A 3 L three-necked round bottom flask equipped with mechanical stirrer (or magneticstirrer), addition funnel and thermometer (or Dean-Stock; drying tube)1.2: All flasks used in the reaction were heated under vacuum for 30 minutes and purged withN2 for 10 minutes. (无水反应装置)Part 2: 加料2.1: 不同的顺序和表达2.1.1: A 3 L three-necked round bottom flask equipped with mechanical stirrer (or magneticstirrer), addition funnel and thermometer (or Dean-Stock; drying tube) were charged with A(10 mL, 1 mole), B (2 g, mole) and C (50 mL),2.1.1.1: a solution of D (10 g, 1 mole) in E (20 mL) was added dropwise (via addition funnelor syringe) at 10o C (or while maintaining gentle reflux; while keeping inner temperaturebetween 10o C – 30o C) under N2 （液体滴加到反应液中）2.1.1.2: D (10 g, 1 mole) was added in portions during a period of 1 hr (固体分批加入到反应液中)2.1.1.3: D (10 g, 1 mole) and E (20 mL) were added in turn2.2:To a solution (mixture, suspension or slurry) of A (10 mL, 1 mole) and B (2 g, mole) in C (50mL)2.2.1: was added dropwise a solution of D (10 g, 1 mole) in E (20 mL) with stirring at 10o C(or while maintaining gentle reflux; while keeping inner temperature between 10o C –30o C)under N22.2.2: was added D (10 g, 1 mole) in portions during a period of 1 hrSentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd.Confidential Page 2 of 72.2.3: were added D (10 g, 1 mole) and E (20 mL) in turn2.3:2.3.1: A solution of D (10 g, 1 mole) in E (20 mL) was added dropwise into a solution(mixture or suspension) of A (10 mL, 1 mole) and B (2 g, mole) in C (50 mL) at 10o C (orwhile maintaining gentle reflux; while keeping inner temperature between 10o C –30o C) underN22.3.2: D (10 g, 1 mole) was added into a solution (mixture or suspension) of A(10 mL, 1mole) and B (2 g, mole) in C (50 mL) in portions2.3.3: D (10 g, 1 mole) and E (20 mL) were added into a solution (mixture or suspension) ofA (10 mL, 1 mole) andB (2 g, mole) inC (50 mL) in turn2.4:2.4.1: A solution of BuLi or BH3/THF (10 mL, 1 mole, 2.5 M in hexane) was cannulated intoaddition funnel or into a solution A in solvent B2.4.2: A solution of BuLi or BH3/THF (10 mL, 1 mole, 2.5 M in hexane) was added into asolution of A in solvent B via cannula, dropping funnel or syringe over a period of hrs Part 3: 反应3.1: 无溶剂反应A (1 g, 1 mol) andB (1 g, 1 mol) were dissolved in solvent C, evaporated to dryness andheated for x hours at x o C3.2: 催化量的反应A (20 mL, 142 mmol) and catalytic amount (a trace amount or two drops) ofB were addedinto a solution of C (4.549 g, 46.4 mmol) in D(120mL) at 0 o C3.3: 闷罐反应或封管反应A solution of A(x g, x mol) in methanol (x mL) saturated with NH3 (or other gas such as: CO,CO2, H2S) was stirred under 50 Psi at x o C for x hours in a 50 mL of sealed tube or autoclave.Sentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd.Confidential Page 3 of 73.4: 有气体参与的反应3.4.1: A solution of A (x g, x mol) in methanol (x mL) saturated with HCl was stirred at x ℃.3.4.2: Ozone was bubbled into a solution of A (x g, x mol) in MeOH (x mL) at x o C for 15minutes. After excess O3 was purged by N2, Me2S (x mL) was added at x o C.3.4.3: Gas was bubbled into a solution of A (x g, x mol) and B (x g, x mol) in solventC (xmL) at x o C for x hours.3.5: 混合溶剂参与的反应3.5.1: To a solution of A (x g, x mol) in a mixture of solvent B (mL) and solvent C (x mL) (ora mixed solvent of B and C) was added D (x g, x mol) at x o C, the reaction mixture wasallowed to stir (reflux or heat) for x hrs.3.5.2: To a solution of A (x g, x mol) in 10: 1 aqueous acetone (x mL) was added B (x g, xmol) followed by addition of C (x g, x mol), the reaction mixture was allowed to stir (refluxor heat) for x hrs.3.6: 分水器分水的反应3.6.1: A (x g, x mol) and B (x g, x mol) in benzene or toluene (x mL) were refluxed for xhours with azeotropical removal of water.3.6.2; A mixture of A, B and TsOH.H2O (56.91 g, 0.3 mol) in toluene (400 mL) was heated toreflux and remove water by Dean-Stark trap.3.7: 氢化反应To a solution of A (x g, x mol) in EtOH (x mL) was added Pd-C or Ra-Ni orPd(OH)2/C (10%,x g) under N2. The suspension was degassed under vacuum and purged with H2 several times.3.7.1: The mixture was stirred under H2 (x psi) at x ℃for x hours. [氢化瓶或高压釜] 3.7.2: The mixture was stirred under H2 balloon at x ℃for x hours. [常压氢化如气球反应]3.7.3: A mixture of A (x g, x mol) and Ra-Ni (x g) in EtOH (x mL) was hydrogenated under50 Psi of hydrogen pressure for x hours at room temperature.Sentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd. Confidential Page 4 of 7Part 4: 反应条件或过程描述4.1: The reaction mixture (solution or suspension) was stirred at 5o C for 2 hrs and then kept atroom temperature (or ambient temperature) for another 2 hrs (or overnight)4.2: The reaction mixture (solution or suspension) was refluxed (heated to reflux) or heated at60o C for 2 hrs (or overnight)4.3: The reaction mixture (solution or suspension) was allowed to reflux (or heat to reflux) for2 hrs (or overnight)4.4: The reaction mixture (solution or suspension) was allowed to warm to temperature during2 hrs and reflux (or heat to reflux) for 2 hrs (or overnight)Part 5: 反应监测5.1: Taking sample from the reaction mixture (solution or suspension) by dropping tube orsyringe. After workup, check the reaction via TLC, LC-MS or HPLC etc.. (预处理) 5.2: 反应状态或终点描述5.2.1: The reaction was complete (incomplete or messy) detected (determined or confirmed)by TLC (PE/EtOAc 4:1), LC-MS, HPLC or NMR5.2.2: TLC (PE:EtOAc=1:1) or HPLC (107757-088-1) showed or indicated that the reactionwas complete.5.2.3: TLC (PE:EtOAc=1:1) or HPLC (107757-088-1) showed the starting material wasconsumed completely.5.2.4: TLC (PE:EA=1:1) or HPLC (107757-088-1) showed the reaction didn’t work at all ormost of starting material was still remained.5.2.5: The starting material was consumed completely, but no desired compound was detectedor determined by MS (106657-078-1) or LC-MS (106657-078-1).5.2.6: Several spots were shown on TLC.5.2.7: Only a trace amount of desired compound was detected by MS (106657-078-1) orLC-MS (106657-078-1) or HPLC (106657-078-1) or TLC (PE:EtOAc=1:1).5.2.8: The desired compound could not be isolated, separated or purified by chromatographyor prep. HPLC due to poor yield or poor solubility.Sentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd. Confidential Page 5 of 75.2.9:1H NMR (106675-010-2) or MS confirmed the obtained (or isolated) compound is notthe desired compound. The reaction was failed.Part 6: 反应淬灭6.1: An aqueous solution of A (10 mL) was added dropwise into the reaction mixture once thereaction mixture (solution or suspension) was allowed to warm (or cool) to -5o C or roomtemperature (ambient temperature).6.2: The hot (or cold) reaction mixture (solution or suspension) was poured into water (icewater) or poured onto ice.6.3: The reaction mixture (solution or suspension) was concentrated (distilled) under reducedpressure (in vacuum) or evaporated to remove MeOH (THF; DMF etc.) or excess SOCl2(reagent). Then the reaction residue (or the residual) was diluted with solvent and poured intowater (ice water) or poured onto ice.Part 7: 分液提取7.1: The residue was partitioned between ethyl acetate (100 mL) and 1N aq. HCl (50 mL).The separated organic layer was washed with water, dried over (Na2SO4 or MgSO4) andevaporated to dryness.7.2: After quenching the reaction, the reaction mixture was poured into separatory funnel andseparated.7.3: The aqueous layer (or phase) was extracted with organic solvent (40 mL) twice (or Xtimes). The combined organic layers were (or the organic layers were combined and) washedwith an aqueous solution of A (50 mL) or water and dried over Na2SO4 or MgSO4.7.4: The combined aqueous layers were extracted with solvent (40 mL) twice (or X times) toremove neutral impurities. The aqueous phase was acidified (or basified) with aqueous HCl(or NaHCO3) till PH = X and extracted with organic solvent.7.5: The combined organic layers were (or the organic layers were combined and) washedwith an aqueous solution of A (50 mL) or water and dried over Na2SO4 or MgSO4. Sentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd. Confidential Page 6 of 7Part 8: 浓缩蒸发8.1: After filtration via filter paper or Celite pad, the organic layer (or extract) was concentrated under reduced pressure (or in vacuum) or evaporated to dryness to provide(afford; give or yield) an oil (or foam) (which solidified on standing) or a white solid.8.2: The organic layer (or extract) was filtered and concentrated under reduced pressure (or invacuum) or evaporated to dryness to provide (afford or give) A (10 g, 0.5 mole) an oil (orfoam) (which solidified on standing) or a white solid.8.3: After removal of solvent by evaporation or concentration, A (10 g, 0.5 mole) was obtained (or prepared) an oil (or foam) (which solidified on standing) or a white solid.8.4: The extract in CH2Cl2 was evaporated to dryness and then swapped with toluene toremove residual CH2Cl2.Part 9: 几种常见的后处理描述9.1: The reaction mixture or solution was concentrated to dryness. [适用于反应液不需要quench]9.2: After the reaction mixture was cooled to 0 ℃, the reaction mixture was quenched byaddition of x mL of H2O, followed by x mL of 15% aqueous NaOH. After being stirred atroom temperature for x hour, the solid was removed by filtration (or the mixture was filteredthroughCelite pad to remove by-product). The filtrate was concentrated to dryness to givecrude product. [LiAlH4 反应的经典后处理]9.3: The mixture was diluted with water (x mL), neutralized with solid K2CO3 until no CO2was evolved. [适用于酸性反应液的后处理]9.4: The suspension was filtered through a pad of Celite or silica gel and the pad or filter cakewas washed with EtOH (x mL×x). The combined filtrates were concentrated to dryness togive product (x g, x%) as. [适用氢化反应的后处理, 或者难于过滤的反应液的后处理, 但要注意的是这里需要的是滤液而不是固体才能添加助滤剂]9.5: The reaction mixture was poured into x mL of ice-water carefully and the organic layer orphase was separated. [产物在有机相里]9.6: The reaction mixture was poured into x mL of ice-water carefully and the aqueous phasewas washed with Et2O (x mL×x) [产品在水相] and acidified with 1N HCl to pH=3. TheSentence Template for Notebook and Report Writing WuXiPharmaTech Co., Ltd. Confidential Page 7 of 7resulting precipitate was collected by filtration or the resulting solution was extracted with EA(x mL×x).9.7: The reaction mixture was filtered and the filter cake was washed with x mL of solvent,dried in vacuum to give or afford product. [这里需要的是固体而不是滤液]9.8: The reaction mixture was quenched with x mL of saturated aqueous NH4Cl. The resultingsolution was extracted with EA (x mL×x). [适用于丁基锂等活泼金属有机物的后处理]9.10: The residue was triturated with ether and filtered to afford a white solid. (磨碎) 9.11: The crude product was purified by prep. HPLC to give A as a colorless thick oil whichwas solidified on standing. (静止固化)9.12: After prep. HPLC purification, the eluent was concentrated or evaporated to removeorganic solvents. The residual aqueous solution was lyophilized to give a white solid. (冷冻干燥)9.13: After concentration, the crude product was used directly for the next step withoutpurification.Part 10: 产品的纯化10.1: The crude product was purified by silica gel chromatography eluted with PE: EtOAc=10:1 to give product (x g, x%) as yellow solid.10.2: The crude product was purified by re-crystallization (or re-crystallized) from x solvent(x mL).10.3: The crude product was distilled in vacuum (x o C, x pressure) to afford pure product (x g,x%) as colorless liquid.10.4: The crude product was pre-purified by column chromatography followed by prep.HPLC purification or re-crystallization to afford pure product.__。
英语作文,实验报告[5篇材料]
![英语作文,实验报告[5篇材料]](https://img.taocdn.com/s3/m/8d9f75bd690203d8ce2f0066f5335a8102d266fc.png)
英语作文,实验报告[5篇材料]第一篇：英语作文,实验报告请根据下列内容，写一篇短文，说明整个实验的内容。
实验目的：不打烂鸡蛋取走蛋壳实验器材：一个玻璃杯，一个小锅，水，一个鸡蛋，醋(vinegar)约250毫升实验步骤：1.把鸡蛋放在锅中煮十五分钟左右；2.把煮熟的鸡蛋放到玻璃杯中；3.往玻璃杯中倒醋，醋要漫过鸡蛋；4.让鸡蛋仔醋中浸泡24小时。
实验结果：24小时后，鸡蛋壳完全消失。
实验结论：醋中的酸性物质(acid)与蛋壳中的碳酸钙(calcium carbonate)反应生成二氧化碳(carbon dioxide)，蛋壳(shell)消失。
注意：词数：100—120。
写作指导：文章体裁是_______,因此时态可以是_______,全文可以这样分段：内容及要点信息常用句型及词汇：实验目的：the aim of the experiment is to…;in order to find out…;we carry out an experiment to…;with the purpose of…;in the hope of实验器材：you need…;the following things are neededwill be used实验步骤或方法：cookboil,fill…in,weigh,wait,place,react反应,form；first,first of all,next,second,after that,finally, in the end,at last, for 15minutes,24hours later…实验结论：from this we can conclude…we can learn from the experiment…we can find out that…the result is…you can seediscover…连词成句，再用上恰当的过渡词连句成篇：1.这个实验的目的是取走蛋壳而不打烂鸡蛋。
英语小实验作文6篇范文
英语小实验作文6篇范文As it is not feasible to provide six full-length (1000 words each) English essays for an "English experiment" in one response, I will instead outline the structure and content ideas for six different experiments, along with brief introductions for each. You can use these ideas to develop your own essays.---。
Experiment 1: The Effect of Music on Memory.Introduction (100 words):This experiment explores the effect of different types of music on memory retention. Participants will be asked to memorize a list of words and then recall them after listening to different genres of music.Method (200 words):Participants will be divided into groups. Each groupwill listen to a different type of music (e.g., classical, pop, heavy metal) for 10 minutes. Before and after the music, they will be given a list of 20 words to memorizeand recall. The number of correctly recalled words will be recorded.Results and Discussion (500 words):Describe the results of the experiment, including which type of music, if any, had a positive or negative effect on memory. Discuss possible explanations for the results and how they relate to existing research on music and memory.Conclusion (100 words):Summarize the key findings and implications of the experiment. Suggest possible directions for future research.---。
化学实验报告英文版
化学实验报告英文版Title: Chemistry Experiment ReportIntroduction:In this experiment, we aimed to investigate the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) to understand the concept of neutralization and the formation of a salt and water.Materials:- 50 ml of 0.1 M NaOH- 50 ml of 0.1 M HCl- 100 ml beaker- Stirring rod- pH indicator- Bunsen burner- Safety gogglesProcedure:1. Measure 50 ml of 0.1 M NaOH and pour it into the 100 ml beaker.2. Measure 50 ml of 0.1 M HCl and pour it into a separate 100 ml beaker.3. Add a few drops of pH indicator to the NaOH solution and stir with the stirring rod.4. Carefully pour the HCl solution into the NaOH solution while stirring continuously with the stirring rod.5. Observe any changes in the solution, such as color or temperature.Results:Upon mixing the NaOH and HCl solutions, a neutralization reaction occurred, resulting in the formation of water and sodium chloride (NaCl) salt. The pH indicator changed color from basic to neutral, indicating the completion of the reaction. The solution also produced heat, indicating an exothermic reaction. Discussion:The reaction between NaOH and HCl is a classic example of a neutralization reaction. When an acid and a base react, they neutralize each other, forming a salt and water. In this case, the NaOH and HCl reacted to form NaCl and H2O. The heat produced during the reaction is a result of the exothermic nature of the neutralization reaction.Conclusion:This experiment successfully demonstrated the concept of neutralization and the formation of a salt and water from the reaction between NaOH and HCl. The results were consistent with the expected outcomes, and the experiment was conducted safely and effectively.Overall, this experiment provided valuable insight into the chemical reactions involving acids and bases, and the concept of neutralization in chemistry.。
科学实验作文模板英语
科学实验作文模板英语英文回答：Scientific Experiment Essay Template。
Introduction。
State the purpose of the experiment.Briefly describe the background and significance of the experiment.Formulate a clear and concise hypothesis.Methods。
Describe the materials used in the experiment.Outline the steps of the procedure in detail.Specify any controls or variables that were used.Ensure the experiment is repeatable and reproducible.Results。
Present the data collected from the experiment.Use graphs, tables, or charts to illustrate the results.Perform statistical analysis (if necessary) to determine the significance of the results.Discussion。
Interpret the results and explain their significance.Discuss the implications of the findings.Consider possible sources of error and limitations.Suggest directions for future research.Conclusion。
实验报告英文版
The determination of nitrogen content in the ammonium salt(Formaldehyde method)一、The experiment purpose1、To study the application of acid-base titration2、Master the formaldehyde method principle and the method for determination of nitrogen content in the ammonium salt3、The use of master the volumetric flask and pipet二、The experimental principleBecause NH4 acid is too weak to directly with NaOH standard solution titration, we usually using formaldehyde is transformed into titratable acid:4NH4++6HCOH=(CH2)6N4H++3H++6H2OProducts, hydrogen ions and (CH2)6N4H+ can be directly for accurate titration,titration product (CH2)6N4 is weak alkaline, so using phenolphthalein as indicator.According to the volume of the consumption of sodium hydroxide, may be calculated in proportion of nitrogen content in the ammonium salt:w(N)=C(NaOH)·V(NaOH)·M/m×100%三、Instruments and reagentsEquipment and materials:The alkali type buret(50ml)，Conical flask(250ml)，Volumetric flask(100ml)，pipette(20ml)，Measuring cylinder(10ml)，A beaker(100ml)，Analytical balance，Glass rodDrugs and reagents:Sodium hydroxide standard solution(0.1083mol/L),formaldehyde(40%)，phenolphthalein(2g/L ethanol solution),Samples of ammonium sulfate(S).四、The experimental steps1、Accurately according to 0.60 ~ 0.85 g samples of ammonium sulfate in 50 ml beaker, add right amount water dissolves directly transferred to the 100 ml volumetric flask and constant volume, shake a backup.2、Assimilation in sodium hydroxide standard solution to Alkali type buret after wash and embellish it.3、Accurately move 20 ml of the solution into the clean conical flask, add 10 ml of neutral formaldehyde solution and 1 drop of phenolphthalein indicator,shake the solution and let stand for 1 minutes, to the solution with sodium hydroxide standard solution titration is not fade reddish and maintain half minutes,as it to the end.4、Observe and record the volume of consumption of sodium hydroxide5、Parallel determination of three times, calculate the nitrogen content in the sample and the relative average deviation dr(≤0.3%)W(N)=(20.99%+21.01%+21.01%)/3=21.00%d=(0.01%+0.01%+0.01%)/3=0.01%dr=d/w(N)=0.01%/21.00%×100%=0.05%.。
高中英语必修三实验作文
高中英语必修三实验作文Possible essay:Lab Report: Investigating the Effect of pH on Enzyme Activity。
Introduction。
Enzymes are proteins that catalyze biochemical reactions by lowering the activation energy required for the reaction to occur. Enzymes are highly specific in their function and can be affected by various factors, such as temperature, substrate concentration, and pH. In this experiment, we aimed to investigate the effect of pH on the activity of the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen.Materials and Methods。
The materials used in this experiment were:Catalase enzyme solution。
Hydrogen peroxide solution (3%)。
Buffer solutions of different pH (4, 7, and 10)。
Test tubes and rack。
Graduated cylinder。
Stopwatch。
The methods used in this experiment were:1. Label three test tubes as pH 4, pH 7, and pH 10, respectively.2. Using a graduated cylinder, measure 5 mL of catalase enzyme solution and add it to each test tube.3. Using a different graduated cylinder, measure 5 mLof hydrogen peroxide solution and add it to each test tube.4. Using a dropper or pipette, add 1 mL of buffer solution of the corresponding pH to each test tube.5. Immediately start the stopwatch and record the time it takes for the reaction to produce a visible amount of oxygen gas bubbles.6. Repeat steps 2-5 for each pH level three times to ensure accuracy and consistency.Results。