50+化學(xué)IA選題大集錦（附研究問(wèn)題示例）
學(xué)生參加IB化學(xué)課程面臨的最大挑戰(zhàn)之一就是：提出一個(gè)良好的內(nèi)部評(píng)估（IA）課題。
它必須與IBDP階段的課程要求所契合，與化學(xué)教學(xué)大綱相關(guān)，必須有教科書(shū)外的知識(shí)，至關(guān)重要的是，它必須是學(xué)生親自參與的。
許多學(xué)生不知道怎樣將IB化學(xué)課題與他們現(xiàn)實(shí)世界相結(jié)合。為了解決這個(gè)問(wèn)題，小編給大家奉上化學(xué)IA選題清單，以及一些示例研究問(wèn)題（RQ）。
這些選題將根據(jù)實(shí)驗(yàn)技術(shù)或測(cè)量方法來(lái)分類。
請(qǐng)注意：這只是一個(gè)想法列表，旨在為學(xué)生提供靈感，而不是現(xiàn)成的項(xiàng)目列表。
請(qǐng)不要直接從此列表中復(fù)制！
原因如下：
1、內(nèi)部評(píng)估的標(biāo)準(zhǔn)之一是個(gè)人參與。
學(xué)生的獨(dú)立思考，主動(dòng)性或創(chuàng)造力，可以較明確地證明個(gè)人參與度。
在選擇研究問(wèn)題及調(diào)查主題時(shí)所給出的理由，可以證明自己的參與度、興趣或好奇心。
在調(diào)查的設(shè)計(jì)、實(shí)施或提出過(guò)程中更加主動(dòng)，會(huì)助學(xué)生獲得高分。
2、不經(jīng)思考的選題會(huì)非常糟糕。
比如：
RQ只是一個(gè)標(biāo)題
RQ沒(méi)有重點(diǎn)也不清楚，無(wú)法理解目標(biāo)是什么
RQ不包含任何變量
項(xiàng)目缺乏想象力
項(xiàng)目的成果過(guò)于明顯
項(xiàng)目只是一系列測(cè)量或綜合，而不是調(diào)查
小編為每個(gè)類別提供了邏輯上更弱和更有力的研究問(wèn)題對(duì)比，但請(qǐng)注意，邏輯上更有力的研究問(wèn)題不一定是一個(gè)好的研究問(wèn)題。
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這里是列表：
Acid-base titration IA ideas
酸堿滴定IA選題
| Idea | Weaker Research Question | Stronger Research Question |
| Determining waters of crystallisation
確定結(jié)晶水 |
Are there more waters of crystallisation in cheap washing soda?
在便宜的洗滌蘇打水中是否有更多的結(jié)晶水？
|
Does storage temperature affect the purity of washing soda crystals, determined using acid-base titration to find waters of crystallisation?
儲(chǔ)存溫度是否影響洗滌蘇打晶體的純度，決定了確定結(jié)晶水的酸堿滴定？ |
| Vinegar concentration
醋濃度 |
Does the ethanoic acid concentration vary in vinegars obtained from different grains?
從不同谷物中獲得的醋中乙酸濃度是否不同？
|
Does cooking temperature affect the concentration of ethanoic acid in vinegar, measured by acid-base titration?
烹飪溫度是否會(huì)影響醋中通過(guò)酸堿滴定測(cè)量的乙酸的濃度？
|
| Amount of aspirin in tablets
藥片中阿司匹林的含量 |
Does the amount of aspirin in different brands accurately match the label?
不同品牌的阿司匹林含量是否與標(biāo)簽完全匹配？
|
Using back titration to investigate whether the concentration of aspirin from more expensive tablets is higher after 30 minutes than from cheaper ones.
使用反滴定法研究30分鐘后更昂貴的片劑中阿司匹林的濃度是否高于較便宜的片劑 |
| Drug formulations
藥物配方 |
Which types of indigestion medicines are fastest at neutralising stomach acid?
哪種類型的消化不良藥物在中和胃酸方面最快？ |
Is the release of ibuprofen from different formulations dependent upon pH and temperature, measured using acid-base titration?
使用酸堿滴定測(cè)量，不同配方中布洛芬的釋放是否取決于pH和溫度？ |
| Measuring pH
測(cè)量pH值 |
Factors affecting the pH of sauerkraut
影響酸菜pH值的因素 |
Investigating the effect of fermentation time and temperature on the pH of kimchi using acid-base titration
用酸堿滴定法研究發(fā)酵時(shí)間和溫度對(duì)泡菜pH值的影響 |
| Drug synthesis and purity
藥物合成和純度 |
Is sublimation of salicylic acid after decomposition a reliable way to judge stability of aspirin tablets?
分解后升華水楊酸是判斷阿司匹林片穩(wěn)定性的可靠方法嗎？ |
Determining the optimal solvent and temperature to give highest yield for the synthesis of Dulcin from Tylenol, using titration
使用滴定法測(cè)定最佳溶劑和溫度，以從Tylenol合成Dulcin得到最高產(chǎn)率 |
Chemistry IAs using calorimetry
量熱法
| Idea | Weaker Research Question | Stronger Research Question |
| Determining enthalpy changes
確定焓變 |
Using calorimetry to determine whether alcohols with more branching have higher heats of combustion
使用量熱法確定具有更多支化的醇是否具有更高的燃燒熱 |
Comparing the enthalpies of combustion of ethanol, ethanal and ethanoic acid using calorimetry to quantify intermolecular force strength
使用量熱法比較乙醇，乙醇和乙酸的燃燒焓，以量化分子間力強(qiáng)度 |
| Food calorimetry
食品量熱法
|
Using calorimetry to find out which type of nut butter contains most calories
使用量熱法找出哪種類型的堅(jiān)果黃油含有最多的卡路里 |
Using calorimetry to investigate how food calories are affected by cooking in unsaturated and saturated vegetable oils
使用量熱法研究不飽和和飽和植物油中烹飪對(duì)食物卡路里的影響 |
| Enthalpy of neutralisation
中和焓 |
Is the enthalpy of neutralisation for different acids and alkalis aways 55 kJ mol per mole?
不同酸和堿的中和焓是否為每摩爾55 kJ mol？ |
How does the size and charge of spectator ions affect the value for the enthalpy of neutralisation, measured using calorimetry?
觀測(cè)離子的大小和電荷如何影響使用量熱法測(cè)量的中和焓值？ |
| Hess’s Law
赫斯定律 |
Using Hess’s law to calculate a value for the enthalpy of reaction when magnesium burns in steam
使用赫斯定律計(jì)算鎂在蒸汽中燃燒時(shí)的反應(yīng)焓值 |
Using Hess’s law and calorimetry to investigate the relationship between enthalpy of solution, enthalpy of hydration and lattice enthalpy
用赫斯定律和量熱法研究溶液焓，水合焓和晶格焓之間的關(guān)系 |
| Heating and cooling
加熱和冷卻
|
Which endothermic reactions are good for use in cooling packs, investigated with simple calorimetry?
哪種吸熱反應(yīng)適用于冷卻包，用簡(jiǎn)單的量熱法進(jìn)行研究？ |
How can errors due to heat losses be reduced when investigating the combustion of alcohols by calorimetry?
在通過(guò)量熱法研究醇的燃燒時(shí)，如何減少由于熱損失引起的誤差？ |
IAs involving chemical tests
化學(xué)測(cè)量
| Idea | Weaker Research Question | Stronger Research Question |
| Determining iodine number
確定碘值
|
What is the iodine number of different cooking oils?
不同烹調(diào)油的碘值是多少？
|
How do light intensity and temperature affect the stability of unsaturated oils, determined by measuring iodine number?
光強(qiáng)度和溫度如何影響不飽和油的穩(wěn)定性，通過(guò)測(cè)量碘值來(lái)確定？
|
| Rates of substitution reactions
替代反應(yīng)速率 |
How is the rate of SN2 reactions affected by the carbon-halogen bond strength?
SN2反應(yīng)的速率如何受碳 - 鹵鍵強(qiáng)度的影響？ |
Using halide ion test to determine the activation energy for SN2 reactions of different halogenoalkanes with sodium hydroxide
使用鹵離子測(cè)試來(lái)確定不同鹵代烷烴與氫氧化鈉的SN2反應(yīng)的活化能 |
Chemistry IAs involving colorimetry
比色法
| Idea | Weaker Research Question | Stronger Research Question |
| Drug hydrolysis
藥物水解 |
Is the hydrolysis of aspirin in the stomach affected by the presence of metal ions?
胃中阿司匹林的水解是否受金屬離子的影響？ |
Using the half-life method and colorimetry to determine the activation energy for aspirin hydrolysis at different pH values
使用半衰期方法和比色法確定在不同pH值下阿司匹林水解的活化能 |
| Measuring pKa
測(cè)量pKa |
Determining the pKa value for ibuprofen from pH curves using the half-equivalence method
使用半等效方法從pH曲線確定布洛芬的pKa值 |
What is the pKa value for natural indicators obtained from peonies, poppies and red cabbage, determined using colorimetry?
使用比色法測(cè)定牡丹，罌粟和紅甘藍(lán)的天然指示物的pKa值是多少？ |
IAs involving complexometric titration
絡(luò)合滴定法
| Idea | Weaker Research Question | Stronger Research Question |
| Calcium content of food
食物中的鈣含量 |
Which type of eggshells contain most calcium as measured using precipitation reactions?
使用沉淀反應(yīng)測(cè)量哪種類型的蛋殼含有大部分鈣？ |
To probe whether water acidity affects the calcium ion concentration measured using EDTA complexometric titration
探討水酸度是否影響使用EDTA絡(luò)合滴定測(cè)量的鈣離子濃度 |
IAs involving databases
數(shù)據(jù)庫(kù)
| Idea | Weaker Research Question | Stronger Research Question |
| Lattice enthalpy
格焓 |
Does the lattice enthalpy of different salts affect how effectively they melt ice?
不同鹽的晶格焓會(huì)影響它們?nèi)诨挠行С潭葐幔?/td> | Relating experimental and theoretical values for the lattice enthalpies to charge density of different metal ions
將晶格焓的實(shí)驗(yàn)和理論值與不同金屬離子的電荷密度相關(guān)聯(lián) |
| Computational chemistry
計(jì)算化學(xué) |
Evaluating different mathematical models for the calculation of pI values of amino acids and comparing to database values
評(píng)估不同的數(shù)學(xué)模型，計(jì)算氨基酸的pI值并與數(shù)據(jù)庫(kù)值進(jìn)行比較 |
Using molecular modelling to explore the relationship between halogen size and the preference for T-shaped geometry in interhalogen compounds
使用分子模型來(lái)探討鹵素大小與鹵素間化合物中T形幾何形狀偏好之間的關(guān)系 |
Chemistry IA topics on electrochemistry (voltaic cells, voltammetry, electrolysis)
關(guān)于電化學(xué)的主題（伏打電池，伏安法，電解）
| Idea | Weaker Research Question | Stronger Research Question |
| Electroplating
電鍍 |
Which factors affect the rate of electrolysis in electroplating metals?
哪些因素會(huì)影響電鍍金屬的電解速率？ |
How does voltage and electrolyte concentration affect the oxide layer thickness during the anodisation of aluminium?
在鋁陽(yáng)極氧化過(guò)程中，電壓和電解質(zhì)濃度如何影響氧化層厚度？ |
| Investigating electrolysis
研究電解 |
Is the rate of copper purification affected by the voltage?
銅凈化率是否受電壓影響？ |
Investgating the effects of voltage and bubble overpotential on the electrolysis of sodium chloride using microscale Hoffman voltammetry
用微尺度Hoffman伏安法研究電壓和氣泡過(guò)電位對(duì)氯化鈉電解的影響 |
| Electrochemical cells
電化學(xué)電池 |
Measuring the Gibbs energy change for different spontaneous electrochemical reactions
測(cè)量不同自發(fā)電化學(xué)反應(yīng)的吉布斯能量變化 |
Is there a relationship between ionisation energy and Gibbs energy change for redox reaction between different reactive metals, determined using voltametry
使用伏安法測(cè)定，不同活性金屬之間的電離能和吉布斯能量變化之間是否存在氧化還原反應(yīng)之間的關(guān)系 |
IAs involving gas chromatography
氣相色譜
| Idea | Weaker Research Question | Stronger Research Question |
| Investigating equilibrium
研究反應(yīng)平衡 |
Determing the equilibrium constant for the interconversion of cobalt(II) hexahydrate and tetrachlorocobaltate(II)
確定六水合鈷（II）和四氯鈷酸鹽（II）相互轉(zhuǎn)化的平衡常數(shù) |
Finding the Gibbs energy change for the esterification reaction between propanoic acid and ethanol using gas chromatography
使用氣相色譜法找到丙酸和乙醇之間的酯化反應(yīng)的吉布斯能量變化 |
IAs involving mass measurements
質(zhì)量測(cè)量
| Idea | Weaker Research Question | Stronger Research Question |
| Investigating hydrogels (smart polymers)
研究水凝膠（智能聚合物） |
Do more expensive nappies contain better hydrogels that absorb water faster?
更昂貴的尿布含有更好的水凝膠，可以更快地吸收水分嗎？ |
Does the concentration of nitrate ions in soil affect the mass of water that smart polymer hydrogels can absorb?
土壤中硝酸根離子的濃度是否會(huì)影響智能聚合物水凝膠可以吸收的水的質(zhì)量？ |
| Studying thermal decomposition
研究熱分解 |
Is ease of thermal decomposition of metal carbonates related to their solubility?
金屬碳酸鹽的熱分解容易與其溶解度有關(guān)嗎？ |
Investigating the relationship between metal ion charge density and thermal stability using thermal decomposition experiments
利用熱分解實(shí)驗(yàn)研究金屬離子電荷密度與熱穩(wěn)定性之間的關(guān)系 |
Chemistry IAs involving microscale chemistry
微尺度化學(xué)
| Idea | Weaker Research Question | Stronger Research Question |
| Microscale chemistry
微尺度化學(xué) |
Is microscale chemistry a safe and convenient way to do reactions with halogens in a high school environment?
微量化學(xué)是否是在高中環(huán)境中與鹵素發(fā)生反應(yīng)的安全且方便的方法？ |
Using microscale chemistry to determine the relationship between solubility product and temperature for different metal halides
使用微尺度化學(xué)來(lái)確定不同金屬鹵化物的溶解度產(chǎn)物和溫度之間的關(guān)系 |
| Microscale chemistry
微尺度化學(xué) |
Is microscale chemistry a more efficient way to make aspirin in the laboratory?
微量化學(xué)是否是在實(shí)驗(yàn)室中制備阿司匹林的更有效方法？ |
Investigating the kinetics of the reaction between potassium iodide and lead nitrate using microchemistry
用微量化學(xué)法研究碘化鉀與硝酸鉛之間的反應(yīng)動(dòng)力學(xué) |
IAs involving molecular modelling
涉及分子建模的IA
| Idea | Weaker Research Question | Stronger Research Question |
| Modelling bond angles
鍵角 |
Modelling bond angles in organic compounds and comparing them to actual values using ACD ChemSketch
使用ACD ChemSketch對(duì)有機(jī)化合物中的鍵角進(jìn)行建模并將其與實(shí)際值進(jìn)行比較 |
The effect of halogen electronegativity and atomic radius on bond angles in halogenoalkanes determined using CambridgeSoft Chem3D software
使用CambridgeSoft Chem3D軟件測(cè)定鹵素電負(fù)性和原子半徑對(duì)鹵代烷烴中鍵角的影響 |
IA topics using photoconductivity (measuring light intensity)
光電導(dǎo)率（測(cè)量光強(qiáng)度）
| Idea | Weaker Research Question | Stronger Research Question |
| Determining activation energy
確定活化能 |
What is the activation energy for the oxidation of luminol by hydrogen peroxide?
過(guò)氧化氫氧化魯米諾的活化能是多少？ |
Determining the activation energy of 3 different ‘glowstick’ reactions by measuring light output at different temperatures
通過(guò)測(cè)量不同溫度下的光輸出來(lái)確定3種不同“輝光棒”反應(yīng)的活化能
|
IAs involving polarimetry (measuring optical rotation)
涉及偏振測(cè)量的IA（測(cè)量旋光度）
| Idea | Weaker Research Question | Stronger Research Question |
| Measuring optical rotation
測(cè)量旋光度 |
Investigating the hydrolysis of sucrose into glucose and fructose using polarimetry
使用旋光測(cè)定法研究蔗糖水解成葡萄糖和果糖 |
Determining the equilibrium constant at different temperatures for the mutarotation of lactose using polarimetry
使用偏振測(cè)定法確定乳糖變旋轉(zhuǎn)在不同溫度下的平衡常數(shù) |
IAs involving pressure measurement
涉及壓力測(cè)量的IA
| Idea | Weaker Research Question | Stronger Research Question |
| Determining standard molar volume
確定標(biāo)準(zhǔn)摩爾體積 |
Applying Dalton’s law to study non-ideal gases
應(yīng)用道爾頓定律研究非理想氣體 |
To determine the standard molar volume of hydrogen from the reaction between magnesium and HCl using a barometric method
使用氣壓法測(cè)定鎂和HCl之間反應(yīng)的標(biāo)準(zhǔn)摩爾體積氫 |
| Calculating absolute zero
計(jì)算絕對(duì)零度 |
Can Charles’ Law be used to accurately determine absolute zero?
查爾斯定律可以用來(lái)準(zhǔn)確地確定絕對(duì)零度嗎？ |
Investigating whether ideal or non-ideal gases give a more accurate determination of absolute zero using volume-temperature ratio
研究理想氣體或非理想氣體是否使用體積溫度比更準(zhǔn)確地確定絕對(duì)零度 |
| Determining activation energy
確定活化能 |
Do other transition metals apart from iron(II) catalyse the iodine-clock reaction?
除鐵（II）之外的其他過(guò)渡金屬是否會(huì)催化碘時(shí)鐘反應(yīng)？ |
Does catalase or potassium iodide lower the activation energy most in the famous ‘elephant’s toothpaste’ reaction?
在著名的“大象的牙膏”反應(yīng)中，過(guò)氧化氫酶或碘化鉀是否會(huì)降低活化能？ |
Chemistry IA topics involving redox titration
涉及氧化還原滴定的IA
| Idea | Weaker Research Question | Stronger Research Question |
| Vitamin C content in foods
食物中的維生素C含量 |
Do superfoods contain more vitamin C?
超級(jí)食品含有更多的維生素C嗎？ |
Does cooking temperature affect the vitamin C content of kale as measured by iodometric titration?
通過(guò)碘滴定測(cè)量，烹飪溫度是否影響羽衣甘藍(lán)的維生素C含量？ |
| Amount of oxalate in foods
食物中的草酸鹽含量 |
Does cooking time affect how much oxalate is released from spinach?
烹飪時(shí)間會(huì)影響從菠菜中釋放多少草酸鹽嗎？ |
Is the concentration of oxalate, measured by redox titration, in cooking water from foods like spinach affected by the water temperature and pH?
草酸鹽的濃度，通過(guò)氧化還原滴定法測(cè)量，來(lái)自菠菜等食物的蒸煮水受水溫和pH的影響？ |
| Determining molecular formula
確定分子式 |
Does thermal decomposition allow unknown salts to be identified?
熱分解是否允許識(shí)別未知的鹽？ |
Does the titration temperature affect how accurately the Mr of a hydrated salt can be determined using redox titration?
滴定溫度是否影響使用氧化還原滴定法測(cè)定水合鹽的Mr的準(zhǔn)確度？ |
| Percentage iron in vitamin tablets
維生素片中鐵的百分比 |
Do expensive iron tablets contain more iron than cheaper vitamin tablets?
昂貴的鐵片含有比更便宜的維生素片更多的鐵嗎？ |
To investigate whether different iron complexes used in vitamin tablets are affected by pH using manganate(VII ) titration
研究維生素片中使用的不同鐵絡(luò)合物是否受到使用錳酸鹽（VII）滴定的pH的影響 |
| Amount of copper in brass
黃銅中的銅量 |
Do different grades of brass contain different amounts of copper?
不同等級(jí)的黃銅含有不同量的銅嗎？ |
Using iodometric titration to investigate whether the amount of copper varies in different euro coins
使用碘量滴定來(lái)研究銅的數(shù)量是否隨著不同的歐元硬幣而變化 |
| Oxygen content in water
水中的氧含量 |
Is the oxygen level in my local canal enough to satisfy the biological oxygen demand (BOD) for fish?
當(dāng)?shù)剡\(yùn)河的氧氣水平是否足以滿足魚(yú)類的生物需氧量（BOD）？ |
Does water temperature or pH most affect oxygen levels in lakes as measured using the Winkler method?
使用Winkler方法測(cè)量水溫或pH值是否會(huì)影響湖泊中的氧含量？ |
| Rust removers
除銹劑 |
Do rust removers containing oxalic acid work better if they are used hot?
含有草酸的除銹劑是否趁熱使用效果更好 |
To examine if oxalic acid or citric acid rust removers are more effective at higher temperatures using redox titration
使用氧化還原滴定法檢測(cè)草酸或檸檬酸除銹劑在較高溫度下是否更有效 |
IAs involving solvent extraction
涉及溶劑萃取的IA
| Idea | Weaker Research Question | Stronger Research Question |
| Caffeine determination
咖啡因的測(cè)定 |
Using colorimetry to investigate whether coffee contains more caffeine than tea
使用比色法研究咖啡是否含有比茶更多的咖啡因 |
Investigating whether solvent polarity affects the mass of caffeine extracted from coffee beans using HPLC
使用HPLC研究溶劑極性是否影響從咖啡豆中提取的咖啡因的質(zhì)量 |
| Caffeine extraction
咖啡因的測(cè)定 |
Does water temperature affect the caffeine concentration of tea?
水溫會(huì)影響茶的咖啡因濃度嗎？ |
Does the charge density of the salt ions affect the partition ratio for caffeine extraction from water with different solvents?
鹽離子的電荷密度是否會(huì)影響用不同溶劑從水中提取咖啡因的分配比例？ |
IAs using spectroscopy
光譜學(xué)
| Idea | Weaker Research Question | Stronger Research Question |
| Radical substitution reactions
自由基取代反應(yīng) |
Does vitamin C act as a radical scavenger and slow down the rate of free radical substitution?
維生素C是否會(huì)起到根治性清除劑的作用，并減緩自由基取代的速度？ |
Does wavelength of UV light affect the products obtained from the reaction between ethane and chlorine, determined using NMR spectroscopy?
紫外線的波長(zhǎng)是否影響乙烷和氯之間反應(yīng)得到的產(chǎn)物，使用核磁共振光譜測(cè)定？ |
| Investigating surfactants
表面活性劑 |
Does the critical micelle concentration of ‘Triton’ and ‘Tergitol’ type surfactants affect their detergent ability?
'Triton'和'Tergitol'型表面活性劑的臨界膠束濃度是否影響其洗滌能力？ |
Using spectrophotometry to investigate whether the CMC of quaternary ammonium salts is affected by pH
用分光光度法研究季銨鹽的CMC是否受pH影響 |
| Chlorophyll in food
食物中的葉綠素
|
Does cooking time affect rate of chlorophyll degradation?
烹飪時(shí)間是否影響葉綠素降解率？ |
Investigating how water pH affects chlorophyll degradation at different temperatures using spectrophotometry
使用分光光度法研究水pH如何影響不同溫度下的葉綠素降解 |
| Investigating fluorescence
熒光 |
Using spectroscopy to investigate chlorophyll fluorescence
用光譜學(xué)研究葉綠素?zé)晒?/td> | How is the fluorescence wavelength of fluorophores present in tumeric affected by solvent polarity measured by spectroscopy?
通過(guò)光譜測(cè)量，溶劑極性對(duì)姜黃中熒光團(tuán)的熒光波長(zhǎng)有何影響？ |
| Measuring absorbance
測(cè)量吸光度
|
Is the absorbance of light by transition metal complex related to the ligand charge?
過(guò)渡金屬絡(luò)合物的光吸收是否與配體電荷有關(guān)？ |
Is their a correlation between metal ion charge and wavelength of light absorbed by transition metal complexes?
它們是金屬離子電荷與過(guò)渡金屬配合物吸收的光波長(zhǎng)之間的相互關(guān)系嗎？ |
| Determining rate expression
確定費(fèi)率表達(dá) |
Using the vanishing cross method to determine the order of reactions when sodium thiosulfate and hydrochloric acid react
使用消失交叉法測(cè)定硫代硫酸鈉和鹽酸反應(yīng)時(shí)的反應(yīng)順序 |
Evaluating the rate law and rate constant for the kinetics of the bleaching reactions of some common dyes using spectrometry
使用光譜法評(píng)估一些常見(jiàn)染料的漂白反應(yīng)動(dòng)力學(xué)的速率定律和速率常數(shù) |
| Enzyme kinetics
酶動(dòng)力學(xué) |
Determining the optimum temperature for the breakdown of hydrogen peroxide by catalase found in liver
確定肝臟中過(guò)氧化氫酶分解過(guò)氧化氫的最佳溫度 |
Which factor, UV light, temperature or pH has the greatest effect on the denaturation of lipase measured using UV-VIS spectroscopy?
紫外線，溫度或pH中，哪種因素對(duì)使用UV-VIS光譜測(cè)量的脂肪酶變性影響最大？ |
| Investigating catalysts
催化劑 |
Which is the best catalyst for hydrogen peroxide decomposition, potato, liver, manganese oxide or potassium permanganate?
哪種是過(guò)氧化氫分解的最佳催化劑，馬鈴薯，肝臟，氧化錳或高錳酸鉀？ |
Investigating solid acid catalysis of esterification reactions using infra-red spectroscopy
用紅外光譜研究酯化反應(yīng)的固體酸催化劑 |
IAs involving spreadsheets
電子表格
| Idea | Weaker Research Question | Stronger Research Question |
| Spreadsheet calculations
電子表格計(jì)算 |
Using Excel to calculate pI values for peptide and compare with literature values
使用Excel計(jì)算肽的pI值并與文獻(xiàn)值進(jìn)行比較 |
Modelling the relationship between reaction quotient and equilibrium constant when changing temperature and pressure of the Haber reaction using spreadsheets
當(dāng)使用電子表格改變Haber反應(yīng)的溫度和壓力時(shí)，模擬反應(yīng)商與平衡常數(shù)之間的關(guān)系 |
Chemistry IA topics based around synthesis
基于合成反應(yīng)的IA
| Idea | Weaker Research Question | Stronger Research Question |
| Different heating methods
不同的加熱方式 |
Can aspirin be prepared using microwave heating instead of a water bath?
阿司匹林可以用微波加熱而不是水浴來(lái)制備嗎？ |
Assessing the yield of aspirin when prepared using microwave heating compared to conventional heating method
與常規(guī)加熱方法相比，使用微波加熱制備阿司匹林的產(chǎn)率 |
| Aromatic compounds
芳香族化合物 |
Using thin-layer chromatography to investigate the synthesis of the antiseptic 2,4,6-tricholorohydroxybenzene
使用薄層色譜法研究抗菌2,4,6-三氯苯基苯的合成 |
Comparing the products from the nitration of benzene, phenol and benzaldehyde using infra-red spectroscopy
使用紅外光譜法比較苯，苯酚和苯甲醛的硝化產(chǎn)物 |
| Fragrance compounds
香料化合物 |
The effect of reaction temperature on the yield from esterification reactions
反應(yīng)溫度對(duì)酯化反應(yīng)產(chǎn)率的影響 |
The effect of reaction temperature on product purity when synthesising Oil of Wintergreen assessed using TLC
用TLC評(píng)價(jià)合成冬青油時(shí)反應(yīng)溫度對(duì)產(chǎn)物純度的影響 |
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