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IB Chemistry IA Grade 7 Examples

Browse top scoring exemplars of IB Chemistry IA Grade 7 with SL/HL samples, examiner-style feedback, criteria breakdowns, and real student Internal Assessment exemplars.

How do the concentrations (0.05, 0.10, 0.15, 0.20, 0.25) 0.001 mol dm⁻³ of 100 cm³ aqueous sodium chloride solution affect the volume of hydrogen gas (cm³) collected at the cathode in the Hoffman apparatus after 5.00 0.01 minutes of electrolysis using a 10V power supply? - Chemistry IA exemplar

How do the concentrations (0.05, 0.10, 0.15, 0.20, 0.25) 0.001 mol dm⁻³ of 100 cm³ aqueous sodium chloride solution affect the volume of hydrogen gas (cm³) collected at the cathode in the Hoffman apparatus after 5.00 0.01 minutes of electrolysis using a 10V power supply?

How does the degree of unsaturation in different edible lipids ( palm, olive,
coconut, sunflower, and canola oils) affect their susceptibility to oxidation when subjected to heat and atmospheric oxygen, as measured by peroxide value determined via iodometric
titration? - Chemistry IA exemplar

How does the degree of unsaturation in different edible lipids ( palm, olive, coconut, sunflower, and canola oils) affect their susceptibility to oxidation when subjected to heat and atmospheric oxygen, as measured by peroxide value determined via iodometric titration?

How does the concentration of aqueous sodium chloride (NaCl) affect the freezing point (Tf of the NaCl solution, measured in °C) of the solution? - Chemistry IA exemplar

How does the concentration of aqueous sodium chloride (NaCl) affect the freezing point (Tf of the NaCl solution, measured in °C) of the solution?

Is there a difference in the degree of unsaturation of five named vegetable oil types (sunflower, olive, canola, soybean, and coconut) measured by iodine value determined through iodometric titration? - Chemistry IA exemplar

Is there a difference in the degree of unsaturation of five named vegetable oil types (sunflower, olive, canola, soybean, and coconut) measured by iodine value determined through iodometric titration?

How does the concentration of alcalase concentrate (0.00%, 0.50%, 1.00%, 1.50%, 2.00%) affect the average rate of 40.00 gdm-3 ovalbumin degradation after 5 minutes, measured using a Bradford protein assay and the absorbance at a wavelength of 595 nm with spectrophotometry? - Chemistry IA exemplar

How does the concentration of alcalase concentrate (0.00%, 0.50%, 1.00%, 1.50%, 2.00%) affect the average rate of 40.00 gdm-3 ovalbumin degradation after 5 minutes, measured using a Bradford protein assay and the absorbance at a wavelength of 595 nm with spectrophotometry?

How‬‭ does‬‭ the‬‭ duration‬‭ of‬‭ boiling‬‭ (0,‬‭ 2,‬‭ 4,‬‭ 6,‬‭ 8,‬‭ 10‬‭ ‬minutes)‬‭±‭ 0‬ .‭ 01‬‭ ‬‭ 𝑠 affect‬ the‬‭ vitamin‬‭ C‬‭ content‬‭ (mg/100‬‭ g)‬‭ in‬‭ spinach,‬‭ as‬‭ determined‬‭ by‬‭ redox‬‭ titration‬‭ using‬‭ 0.005‬±‭ 0‬ .‭ 779%‬ M iodine solution and starch indicator?‬ - Chemistry IA exemplar

How‬‭ does‬‭ the‬‭ duration‬‭ of‬‭ boiling‬‭ (0,‬‭ 2,‬‭ 4,‬‭ 6,‬‭ 8,‬‭ 10‬‭ ‬minutes)‬‭±‭ 0‬ .‭ 01‬‭ ‬‭ 𝑠 affect‬ the‬‭ vitamin‬‭ C‬‭ content‬‭ (mg/100‬‭ g)‬‭ in‬‭ spinach,‬‭ as‬‭ determined‬‭ by‬‭ redox‬‭ titration‬‭ using‬‭ 0.005‬±‭ 0‬ .‭ 779%‬ M iodine solution and starch indicator?‬

How does the solubility of aspirin in water (expressed as maximum mass dissolved in 1 dm3) vary with temperature (20, 25, 30, 35, 40, 45 ºC), determined by back-titration of excess NaOH with HCl solution? - Chemistry IA exemplar

How does the solubility of aspirin in water (expressed as maximum mass dissolved in 1 dm3) vary with temperature (20, 25, 30, 35, 40, 45 ºC), determined by back-titration of excess NaOH with HCl solution?

How does the increasing temperature of the Cu²⁺ electrolyte (298 K, 308 K, 318 K, 328 K, 338 K, 348K ±0.5 K) affect the measured cell potential (Ecell, V ±0.001 V) of a Cu²⁺/Cu || Zn²⁺/Zn galvanic cell, as measured using a digital voltmeter, and how can the equilibrium constant (K) be determined from the measured potentials using the Nernst equation? - Chemistry IA exemplar

How does the increasing temperature of the Cu²⁺ electrolyte (298 K, 308 K, 318 K, 328 K, 338 K, 348K ±0.5 K) affect the measured cell potential (Ecell, V ±0.001 V) of a Cu²⁺/Cu || Zn²⁺/Zn galvanic cell, as measured using a digital voltmeter, and how can the equilibrium constant (K) be determined from the measured potentials using the Nernst equation?

How does ethanol percentage (0%, 20%, 40%, 60%, 80%) in the aqueous phase
affect the partition coefficient of aspirin between water and oil phase determined
through back titration? - Chemistry IA exemplar

How does ethanol percentage (0%, 20%, 40%, 60%, 80%) in the aqueous phase affect the partition coefficient of aspirin between water and oil phase determined through back titration?

How does increasing the molality of sodium chloride (NaCl)
solutions from 0.5 m to 6.0 m, in 0.5 m intervals, affect their boiling point, compared
with theoretical values derived from the Van’t Hoff factor? - Chemistry IA exemplar

How does increasing the molality of sodium chloride (NaCl) solutions from 0.5 m to 6.0 m, in 0.5 m intervals, affect their boiling point, compared with theoretical values derived from the Van’t Hoff factor?

How does temperature (20°C, 30°C, 40°C, 50°C, 60°C, 70°C) affect d-orbital splitting energy (Δ, in kJ/mol) of aqueous [M(H₂O)₆ ]^3+ complexes derived from Cr₂(SO₄)₃·6H₂O, as determined using UV-Visible spectroscopy? - Chemistry IA exemplar

How does temperature (20°C, 30°C, 40°C, 50°C, 60°C, 70°C) affect d-orbital splitting energy (Δ, in kJ/mol) of aqueous [M(H₂O)₆ ]^3+ complexes derived from Cr₂(SO₄)₃·6H₂O, as determined using UV-Visible spectroscopy?

What is the effect of changing temperature (20.0, 30.0, 40.0, 50.0, and 60.0 °C)
on the rate of reaction between magnesium and hydrochloric acid, measured
by recording the pressure change at varying temperatures, and used to calculate the activation energy? - Chemistry IA exemplar

What is the effect of changing temperature (20.0, 30.0, 40.0, 50.0, and 60.0 °C) on the rate of reaction between magnesium and hydrochloric acid, measured by recording the pressure change at varying temperatures, and used to calculate the activation energy?

To Determine the Buffer Capacity of Ethanoic Acid/Ethanoate Buffer Solution at Different Buffer Ratios - Chemistry IA exemplar

To Determine the Buffer Capacity of Ethanoic Acid/Ethanoate Buffer Solution at Different Buffer Ratios

How does changing the structural isomerism in hexane (hexane, 2-methylpentane, 3-methylpentane,
2,3-dimethylbutane and 2,2-dimethylbutane) influence its enthalpy of combustion measured using
calorimetry? - Chemistry IA exemplar

How does changing the structural isomerism in hexane (hexane, 2-methylpentane, 3-methylpentane, 2,3-dimethylbutane and 2,2-dimethylbutane) influence its enthalpy of combustion measured using calorimetry?

How can the concentration (moldm-3) of an unknown dilute hydrochloric acid solution be determined by constructing a calibration curve of reaction rate against concentration, using the reaction between 0.100 O.O1M sodium thiosulfate and standard hydrochloric acid solutions of concentrations 0.050, 0.100, 0.150, 0.200, and 0.250 O.O1 (moldm-3) - Chemistry IA exemplar

How can the concentration (moldm-3) of an unknown dilute hydrochloric acid solution be determined by constructing a calibration curve of reaction rate against concentration, using the reaction between 0.100 O.O1M sodium thiosulfate and standard hydrochloric acid solutions of concentrations 0.050, 0.100, 0.150, 0.200, and 0.250 O.O1 (moldm-3)

How does the molar concentration of ammonium nitrate, NH₄NO₃ (0.5M, 1.0M, 1.5M, 2.0M, 2.5M ± 0.01 mol dm⁻³), affect the temperature change (ΔT, °C) and enthalpy of dissolution (ΔH°sol, kJ mol⁻¹), measured using a simple calorimeter? - Chemistry IA exemplar

How does the molar concentration of ammonium nitrate, NH₄NO₃ (0.5M, 1.0M, 1.5M, 2.0M, 2.5M ± 0.01 mol dm⁻³), affect the temperature change (ΔT, °C) and enthalpy of dissolution (ΔH°sol, kJ mol⁻¹), measured using a simple calorimeter?

What is the minimum mass (g) of 90% calcium oxide (CaO) powder required to raise the temperature of 10.0 ml of distilled water from 26.0°C to 90.0°C in a polystyrene-insulated self-heating hotpot, and how does varying CaO mass affect peak temperature and heat energy released over a 15.00 minute reaction period, as measured by calorimetry? - Chemistry IA exemplar

What is the minimum mass (g) of 90% calcium oxide (CaO) powder required to raise the temperature of 10.0 ml of distilled water from 26.0°C to 90.0°C in a polystyrene-insulated self-heating hotpot, and how does varying CaO mass affect peak temperature and heat energy released over a 15.00 minute reaction period, as measured by calorimetry?

Research question: What are the orders of reaction with respect to iodate ions (IO3-) and metabisulfite ions (S2O52-) in the iodine clock reaction, as determined by the time taken for the reaction mixture to change from colorless to blue/black? - Chemistry IA exemplar

Research question: What are the orders of reaction with respect to iodate ions (IO3-) and metabisulfite ions (S2O52-) in the iodine clock reaction, as determined by the time taken for the reaction mixture to change from colorless to blue/black?

How does temperature (25.0, 35.0, 45.0, 55.0, 65.0°C) affect the adsorption of zinc ions
(Zn²⁺) during 30 min time by 0.08 g carbonate-intercalated layered double hydroxide (LDH), measured by concentration of Zn²⁺ ions remaining in the solution after absorption using titration with 0.010 M EDTA? - Chemistry IA exemplar

How does temperature (25.0, 35.0, 45.0, 55.0, 65.0°C) affect the adsorption of zinc ions (Zn²⁺) during 30 min time by 0.08 g carbonate-intercalated layered double hydroxide (LDH), measured by concentration of Zn²⁺ ions remaining in the solution after absorption using titration with 0.010 M EDTA?

To investigate the effect of varying pH on the rate of ethanol oxidation to ethanoic acid by
acidified potassium dichromate (VI), measured through absorbance change at 430 nm using a
colorimeter, while controlling temperature, reagent volumes, concentrations, temperature,
wavelength, and time period. - Chemistry IA exemplar

To investigate the effect of varying pH on the rate of ethanol oxidation to ethanoic acid by acidified potassium dichromate (VI), measured through absorbance change at 430 nm using a colorimeter, while controlling temperature, reagent volumes, concentrations, temperature, wavelength, and time period.

To what extent does the brand of calcium carbonate-based antacid tablet ( Rennie, Tums, Settlers, Quick Eze, and Rolaids) affect the mass of calcium carbonate per tablet, determined by back titration with 50.0 cm³ of 0.15 mol dm⁻³ HCl and 0.10 mol dm⁻³ NaOH at 25 ± 2 °C?

What is the mathematical relationship between the varying concentration of hydrogen peroxide
(0.10M-1.00M) and the initial rate of its decomposition? - Chemistry IA exemplar

What is the mathematical relationship between the varying concentration of hydrogen peroxide (0.10M-1.00M) and the initial rate of its decomposition?

Research Question: How does the concentration of copper (II) sulfate solution at (0.1 ,
0.2, 0.3, 0.4 and 0.5) M (±0.03) M affect the amount voltage produced by a zinc-
copper voltaic cell - Chemistry IA exemplar

Research Question: How does the concentration of copper (II) sulfate solution at (0.1 , 0.2, 0.3, 0.4 and 0.5) M (±0.03) M affect the amount voltage produced by a zinc- copper voltaic cell

Examining the Effect of Copper Sulfate Concentration on
the Gibbs Free Energy of an Electrochemical Reaction - Chemistry IA exemplar

Examining the Effect of Copper Sulfate Concentration on the Gibbs Free Energy of an Electrochemical Reaction

More Chemistry IA examples

Chemistry IA SL examples
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Chemistry IA guide articles

1. Essentials of the Internal Assessment
15 minute read
2.1 Research design
22 minute read
2.2 Data analysis
40 minute read
2.3 Conclusion
5 minute read
2.4 Evaluation
6 minute read
3. Examiners' Insights
19 minute read
4. Suggested timeline
10 minute read
5. Marking toolkit
12 minute read
6.1 Command term glossary
1 minute read
6.2 IA checklist
10 minute read
7. Student planning sheets
10 minute read

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