ccccEsion/IMUG-Bench huggingface dataset:
Domain: Chemistry / precipitation

turn: 1
modality: image
input: Generate a concise chemical laboratory bench scene: A substance is contained in a <beaker>. This substance must have the following observable appearance: <white, solid, crystalline powder, opaque>. The background should be a <laboratory environment: bench surface, outlines of basic equipment, avoid clutter and text labels>.
output: evaluation_points: 1. The generated container is correct and is indeed a beaker.

2. The color and appearance (crystalline powder) of the target substance match the description 'white, solid, crystalline powder'.

3. The substance is appropriately contained in the beaker, with a suitable amount (e.g., a small mound at the bottom).

4. The background is a simple laboratory bench scene.

turn: 2
modality: text
input: Based on the appearance of the substance in the input image, and given that this substance also has the following properties: <1. It is highly soluble in water. 2. Its aqueous solution is neutral. 3. It is toxic.>, select the substance it most likely is from the following options:
Options:
A. Barium Sulfate (BaSO4)
B. Sodium Chloride (NaCl)
C. Barium Chloride (BaCl2)
D. Calcium Carbonate (CaCO3)
E. None of the above
output: answer: C

turn: 3
modality: image
input: Generate a test tube containing an aqueous solution prepared from the target substance you identified earlier. After adding reagent B = <dilute sulfuric acid (H2SO4)> dropwise to this solution, a precipitate forms inside the test tube. Describe the precipitate by its appearance features: <a dense, white, finely divided solid>. The background is a laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, filled to about one-third of its height.

2. The precipitate color is white, as described.

3. The precipitate state is a finely divided solid (not large crystals or a gel), as described.

4. The solution color is reasonable; after the precipitation reaction, the supernatant liquid should be clear and colorless.

The image background is a simple laboratory bench, consistent with the background of the image generated in Turn 1.

turn: 4
modality: text
input: Based on the precipitation phenomenon observed in the input image, if an 'excess' of reagent C = <concentrated hydrochloric acid (HCl)> is subsequently added and the mixture is allowed to stabilize, the most likely observation is:
Options:
A. The white precipitate dissolves completely, resulting in a clear, colorless solution.
B. The white precipitate remains unchanged; no further reaction occurs.
C. The white precipitate changes color to yellow.
D. Gas bubbles evolve from the precipitate.
E. None of the above
output: answer: B
Domain: Chemistry / precipitation

turn: 1
modality: text
input: Which of the following substances are white, crystalline solids that are soluble in water and whose aqueous solutions contain colorless ions? (Select all that apply)
A. Sodium chloride (NaCl)
B. Copper(II) sulfate pentahydrate (CuSO4·5H2O)
C. Barium chloride dihydrate (BaCl2·2H2O)
D. Iron(III) chloride hexahydrate (FeCl3·6H2O)
E. None of the above
output: answer: A, C

turn: 2
modality: image
input: The target substance is one of the correct options from the previous question. It is a white crystalline solid that is hygroscopic and must be stored in a sealed container to prevent absorption of moisture from the air. Please generate an image showing this target substance stored correctly in its proper container, placed on a laboratory bench.
output: evaluation_points: 1. The container generated is correct: a sealed glass reagent bottle with a stopper or screw cap.

The substance generated is indeed Barium Chloride Dihydrate (BaCl2·2H2O), appearing as a white crystalline powder or small crystals, consistent with the description in turn 2 input text.

3. The substance is correctly contained within the sealed bottle, with an appropriate fill level (e.g., half to three-quarters full).

4. The background is a simple laboratory bench scene.

turn: 3
modality: text
input: We refer to the substance you identified previously as the 'target substance'. When a solution of the target substance is treated with which of the following reagents, will it produce a dense, milky-white precipitate?
A. Dilute sulfuric acid (H2SO4, aq)
B. Dilute hydrochloric acid (HCl, aq)
C. Sodium hydroxide solution (NaOH, aq)
D. Silver nitrate solution (AgNO3, aq)
E. None of the above
output: answer: A

turn: 4
modality: image
input: Please generate a test tube containing an appropriate amount of a solution prepared from the target substance. Show the scene after an excess of the reagent you selected in the previous round has been added, until no more precipitate forms. The background is a simple laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the liquid level at approximately one-third of the tube's height.

2. The precipitate color is a dense, milky-white.

3. The precipitate state is a fine, powdery solid settled at the bottom of the test tube.

4. The solution color is reasonable: a colorless, clear supernatant liquid above the precipitate, consistent with the result of adding excess dilute sulfuric acid to a barium chloride solution after the precipitation reaction is complete.

The image background is a simple laboratory bench, consistent with the background in turn 2 output image.
Domain: Chemistry / precipitation

turn: 1
modality: text
input: Among the following substances, which ones are characterized by being a white solid at room temperature, insoluble in water, and capable of reacting with dilute acids to produce a colorless, odorless gas?
Options:
A. Sodium chloride (NaCl)
B. Calcium carbonate (CaCO3)
C. Copper(II) sulfate pentahydrate (CuSO4·5H2O)
D. Sulfur powder (S)
E. Magnesium oxide (MgO)
F. Sodium hydroxide (NaOH)
G. None of the above
output: answer: B, E

turn: 2
modality: image
input: The target substance is one of the correct options from the previous question. It is a white solid that is insoluble in water and is commonly stored in a wide-mouth glass reagent bottle. Please generate an image showing this target substance stored correctly in its appropriate container and placed on a laboratory bench.
output: evaluation_points: 1. The container generated is correct: a wide-mouth glass reagent bottle with a ground glass stopper.

The substance generated is indeed calcium carbonate (CaCO3), appearing as a white powder, consistent with the described 'white solid' morphology from turn 1.

3. The substance is correctly contained as a dry solid powder within the bottle, and the fill level is appropriate (e.g., half to two-thirds full).

4. The background is a simple laboratory bench scene.

turn: 3
modality: text
input: We refer to the substance you identified earlier as the 'target substance.' When a solution of this target substance is prepared, adding which of the following reagents will produce a white, finely crystalline precipitate?
Options:
A. Dilute hydrochloric acid (HCl)
B. Sodium sulfate solution (Na2SO4)
C. Sodium carbonate solution (Na2CO3)
D. Silver nitrate solution (AgNO3)
E. None of the above
output: answer: D

turn: 4
modality: image
input: Please generate a test tube containing an appropriate amount of a solution prepared from the target substance. The scene should depict the moment after an excess of the reagent you selected in the previous round has been added, until no more precipitate forms. The background is a simple laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the liquid level at approximately one-third of the tube's height.

2. The precipitate color is white, as described in the question stem.

The precipitate state is finely crystalline, as described in the question stem of turn 3.

4. The solution color is reasonable. After adding excess silver nitrate solution to a calcium carbonate solution (prepared by dissolving CaCO3 in dilute acid to form CaCl2), the final solution should be colorless.

The image background is a simple laboratory bench, consistent with the background requirement in turn 2 and turn 4 input.
Domain: Chemistry / precipitation

turn: 1
modality: text
input: Which of the following substances are characterized by being colorless or white crystalline solids at room temperature, possessing a distinct, somewhat sweet and tarry odor, and being moderately soluble in water? (Select all that apply)

A. Sodium chloride (NaCl)
B. Phenol (C6H5OH)
C. Benzoic acid (C6H5COOH)
D. Calcium carbonate (CaCO3)
E. None of the above
output: answer: BC

turn: 2
modality: image
input: It is known that the target substance is one of the correct options from the previous question. Furthermore, it is a substance that is hygroscopic, can cause severe chemical burns upon contact with skin, and must be stored in a tightly sealed, light-resistant container to prevent absorption of moisture and oxidation. Please generate an image showing this target substance stored correctly in its proper container and placed on a laboratory bench.
output: evaluation_points: 1. The container depicted is correct: a brown glass reagent bottle with a tightly sealed stopper or cap.

The substance generated is indeed phenol, appearing as colorless to white crystalline solids or small lumps, consistent with the description in turn 1 input text.

3. The substance is correctly contained within the sealed bottle, with an appropriate fill level (e.g., half to three-quarters full). There is no special liquid medium like kerosene, as phenol is stored dry in a sealed container.

4. The background is a simple laboratory bench scene.

turn: 3
modality: image
input: Please generate a test tube containing an aqueous solution of the target substance you identified (phenol). After adding a few drops of reagent B = Iron(III) chloride solution (FeCl3), a distinct color change occurs within the test tube. The resulting mixture exhibits a characteristic violet-purple coloration. The background is a laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the solution level around one-third of the tube's height.

2. The color of the resulting mixture is a violet-purple hue, characteristic of the iron(III)-phenol complex.

3. The state of the mixture is a homogeneous solution; no precipitate is formed in this reaction.

4. The solution color is reasonable: a clear violet-purple solution, consistent with the formation of the colored complex.

The image background is a simple laboratory bench, consistent with the background in turn 2 output image.

turn: 4
modality: text
input: Based on the color change observed in the input image (formation of a violet-purple complex upon adding FeCl3 to phenol), if an 'excess' of reagent C = Sodium hydroxide solution (NaOH) is subsequently added and the mixture is allowed to stabilize, what is the most likely observation?

A. The violet-purple color intensifies and becomes darker.
B. A white, gelatinous precipitate forms.
C. The violet-purple color fades or disappears, and the solution becomes colorless or pale yellow.
D. Effervescence occurs, releasing a gas with a pungent odor.
E. None of the above.
output: answer: C
Domain: Chemistry / precipitation

turn: 1
modality: image
input: Please generate a concise chemical laboratory bench scene: A <beaker> contains a substance. This substance should have the following observable appearance: <white, solid, fine powder, opaque, no visible luster>. The background should be a <laboratory environment: a bench with basic equipment outlines, avoiding clutter and text labels>.
output: evaluation_points: 1. The generated container is correct and is indeed a <beaker>.

2. The color and appearance (fine powder) of the target substance conform to '<white, solid, fine powder>'.

3. The substance is appropriately contained in the beaker (no special storage requirements), and the quantity is suitable.

4. The background is a simple laboratory bench scene.

turn: 2
modality: text
input: Based on the appearance of the substance in the input image, and given that this substance has the following properties: <1. It is a white solid that is readily soluble in water. 2. Its aqueous solution is alkaline and can turn phenolphthalein indicator pink. 3. It decomposes upon strong heating, releasing a colorless gas that turns limewater milky.>, which of the following substances is it most likely to be?
Options:
A. Sodium Chloride (NaCl)
B. Calcium Carbonate (CaCO3)
C. Sodium Carbonate (Na2CO3)
D. Sodium Bicarbonate (NaHCO3)
E. None of the above
output: answer: C

turn: 3
modality: image
input: Please generate a test tube containing a solution prepared from the target substance you identified earlier. After adding reagent B = <Barium Chloride solution (BaCl2)>, a precipitate appears inside the test tube. Describe the precipitate by its appearance: <a dense, milky-white precipitate>. The background is a laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the liquid level at about one-third of the tube's height.

2. The color of the precipitate satisfies '<milky-white>'.

3. The state of the precipitate satisfies '<dense precipitate>'.

4. The solution color is reasonable; after the precipitation reaction, the solution should appear <colorless and clear>.

The image background is a simple laboratory bench, consistent with the background in the output image of turn 1.

turn: 4
modality: text
input: Based on the precipitation phenomenon shown in the input image, if an 'excess' of reagent C = <Dilute Hydrochloric Acid (HCl)> is added and the mixture is allowed to stabilize, what is the most likely phenomenon to be observed?
Options:
A. The precipitate dissolves completely, and the solution becomes clear and colorless.
B. The precipitate changes color to blue.
C. The precipitate remains unchanged, and gas bubbles appear.
D. The precipitate partially dissolves, and the solution turns yellow.
E. None of the above
output: answer: A
Domain: Chemistry / precipitation

turn: 1
modality: text
input: Which of the following substances are characterized by being a solid at room temperature, exhibiting a distinct color, and requiring storage in a sealed, light-protected container due to sublimation? (Select all that apply)

A. Sodium chloride (NaCl, white crystalline solid)
B. Iodine crystals (I₂, violet-black crystalline solid)
C. Sulfur powder (S₈, yellow powder)
D. Potassium permanganate (KMnO₄, purple-black crystalline solid)
E. None of the above
output: answer: B, D

turn: 2
modality: image
input: The target substance is one of the correct answers from the previous question. It is further characterized by forming violet vapors upon gentle heating and producing a blue-black color when its solution reacts with starch. Please generate an image showing this target substance stored correctly in its proper container and placed on a laboratory bench.
output: evaluation_points: 1. The container generated is correct: a sealed, amber glass bottle or a tightly sealed brown glass reagent bottle.

2. The substance generated is indeed iodine (I₂), appearing as violet-black or dark grayish-purple crystalline solid pieces or flakes.

3. The substance is correctly contained within the sealed bottle, with an appropriate amount (e.g., filling the bottom 1/4 to 1/3 of the bottle).

4. The background is a simple laboratory bench scene.

turn: 3
modality: text
input: We refer to the substance you identified previously as the 'target substance.' When a solution of the target substance is prepared, which of the following reagents, upon addition, will produce a precipitate that is bright yellow in color and has a fine, powdery appearance?

A. Silver nitrate solution (AgNO₃, colorless)
B. Lead(II) nitrate solution (Pb(NO₃)₂, colorless)
C. Sodium hydroxide solution (NaOH, colorless)
D. Barium chloride solution (BaCl₂, colorless)
E. None of the above
output: answer: B

turn: 4
modality: image
input: Please generate a test tube containing an appropriate amount of a solution prepared from the target substance. Show the scene after an excess of the reagent you selected in the previous round has been added, until no more precipitate forms. The background is a simple laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the liquid level at approximately one-third of the tube's height.

2. The color of the precipitate satisfies the described color: bright yellow.

3. The state of the precipitate satisfies the described morphology: a fine, powdery solid settled at the bottom.

4. The solution color is reasonable. After adding excess lead(II) nitrate solution to the potassium iodide solution (the target substance solution), the final supernatant solution should be colorless and clear.

5. The image background is a simple laboratory bench.
Domain: Chemistry / precipitation

turn: 1
modality: image
input: Generate a simple chemical laboratory bench scene: A substance is contained in a beaker. The substance must be a white, solid powder with a matte appearance. The background should be a laboratory environment with a bench and basic equipment outlines, avoiding clutter and text labels.
output: evaluation_points: 1. The container generated in the image is correct and is indeed a beaker.

2. The color and appearance (solid powder) of the target substance conform to the description 'white, solid powder with a matte appearance'.

3. The substance is appropriately contained in the beaker, with a suitable quantity.

4. The background is a simple laboratory bench scene.

turn: 2
modality: text
input: Based on the appearance of the substance in the input image, and given that this substance has the following properties: 1) It decomposes upon heating to release a colorless gas that turns limewater milky. 2) Its aqueous solution is weakly alkaline. 3) It is soluble in water but practically insoluble in ethanol. Which of the following substances is it most likely to be?
Options:
A. Sodium Chloride (NaCl)
B. Calcium Carbonate (CaCO3)
C. Sodium Bicarbonate (NaHCO3)
D. Potassium Nitrate (KNO3)
E. None of the above
output: answer: C

turn: 3
modality: text
input: We refer to the substance you identified in the previous question as the 'target substance'. Which of the following reagents, when added dropwise to a solution of the target substance, will produce a white, finely crystalline precipitate?
Options:
A. Dilute Hydrochloric Acid (HCl)
B. Barium Chloride Solution (BaCl2)
C. Calcium Chloride Solution (CaCl2)
D. Silver Nitrate Solution (AgNO3)
E. None of the above
output: answer: C

turn: 4
modality: image
input: Generate a test tube containing a moderate amount of solution prepared from the target substance. The scene should depict the state after adding an excess of the reagent you selected in the previous round until no more precipitate forms. The background is a simple laboratory bench.
output: evaluation_points: 1. The test tube and the volume of liquid are reasonable, with the liquid level at approximately one-third of the tube's height.

2. The color of the precipitate satisfies the description 'white'.

3. The state of the precipitate satisfies the description 'finely crystalline'.

4. The color of the solution is reasonable. After adding excess calcium chloride solution (CaCl2) to a sodium bicarbonate (NaHCO3) solution and completing the precipitation reaction, the solution should appear colorless and clear.

The image background is a simple laboratory bench, consistent with the background described in turn 1.
Domain: Chemistry / precipitation

turn: 1
modality: image
input: Please generate a concise chemical laboratory bench scene: A substance is contained in a <brown glass reagent bottle with a ground glass stopper>. The substance must have the following observable appearance: <dark purple, solid, needle-like or prismatic crystals, with a metallic luster>. The background should be a <laboratory environment: bench surface with basic equipment outlines, avoid clutter and text labels>.
output: evaluation_points: 1. The generated container is correct: a brown glass reagent bottle with a ground glass stopper.

2. The target substance's color and appearance (dark purple, needle-like or prismatic crystals with a metallic luster) match the description.

3. The substance is correctly contained in the bottle, and the amount is appropriate (not overflowing).

4. The background is a simple laboratory bench scene.

turn: 2
modality: text
input: Based on the appearance of the substance in the input image, and given that this substance is known to have the following properties: 1) It is a strong oxidizing agent. 2) It is soluble in water, forming a deep purple solution. 3) Its solid form decomposes upon heating, releasing oxygen gas. Which of the following substances is it most likely to be?

Options:
A. Potassium dichromate (K2Cr2O7)
B. Copper(II) sulfate pentahydrate (CuSO4·5H2O)
C. Potassium permanganate (KMnO4)
D. Iodine crystals (I2)
E. None of the above
output: answer: C

turn: 3
modality: text
input: We refer to the substance you identified in the previous question as the 'target substance'. When a solution of the target substance is prepared, which of the following reagents, upon dropwise addition, will produce a precipitate with the following characteristics: <brown, amorphous (flocculent)>?

Options:
A. Dilute hydrochloric acid (HCl, aq)
B. Sodium hydroxide solution (NaOH, aq)
C. Barium chloride solution (BaCl2, aq)
D. Sodium sulfite solution (Na2SO3, aq)
E. None of the above
output: answer: D

turn: 4
modality: image
input: Please generate a test tube containing an appropriate amount of a solution prepared from the target substance. The scene should depict the moment after an excess of the reagent you selected in the previous round has been added, until no more precipitate forms. The background is a simple laboratory bench.
output: evaluation_points: 1. The test tube and liquid volume are reasonable, with the liquid level at about one-third of the tube's height.

2. The precipitate color is brown.

3. The precipitate state is amorphous (flocculent), settled at the bottom of the tube.

4. The solution color is reasonable: after adding excess sodium sulfite solution to a potassium permanganate solution and the reaction is complete, the solution should be colorless or very pale yellow (due to the formation of manganese(II) ions).

The image background is a simple laboratory bench, consistent with the background in the Turn 1 input image.