Domain: Chemistry / lab_accident

turn: 1
modality: text
input: Which of the following substances are consistent with the description: 'A colorless, fuming liquid at room temperature that is a strong oxidizing agent and a strong acid'?

Options:
A. Concentrated sulfuric acid (H2SO4, 98%)
B. Concentrated nitric acid (HNO3, 68%)
C. Hydrochloric acid (HCl, 37%)
D. Acetic acid (CH3COOH, glacial)
E. None of the above
output: answer: B

turn: 2
modality: image
input: The target substance is one of the correct options from the previous question. It is a strong oxidizing agent that decomposes upon exposure to light, releasing toxic brown fumes. 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 in the image is correct: a dark brown or amber glass bottle with a ground glass stopper.

2. The substance generated is indeed concentrated nitric acid, appearing as a colorless to pale yellow fuming liquid, consistent with the description 'colorless, fuming liquid'.

3. The bottle is properly sealed with the stopper to prevent fume release and contamination. The bottle is filled to a suitable level (not overfilled).

4. The background is a simple laboratory bench scene.

turn: 3
modality: image
input: We will refer to the substance you identified earlier as the 'target substance'. The target substance can react with copper metal under ambient conditions to produce a brown, toxic gas and a blue solution. Please generate the state of the laboratory bench during this normal reaction, with experimental apparatus, substance states, and reaction phenomena all being reasonable and self-consistent.
output: evaluation_points: 1. The selection, connection, and use of experimental instruments are correct and match the reaction of nitric acid with copper metal (e.g., a beaker or conical flask on a bench, no special heating apparatus needed).

2. The target substance (concentrated nitric acid) is generated in the correct form (a colorless to pale yellow fuming liquid) in the correct location (e.g., being poured from a reagent bottle or already in the reaction vessel).

3. The reactant copper is generated correctly as reddish-brown metal pieces or turnings, located within the reaction vessel.

4. The reaction phenomenon conforms to the description: vigorous brown fumes (nitrogen dioxide, NO2) evolving from the reaction mixture, and the solution turning blue (due to formation of copper(II) ions, Cu2+).

5. The image background is a laboratory bench.

turn: 4
modality: text
input: If, in the normal reaction described above, the copper metal was mistakenly replaced with a piece of sodium metal, what is the most likely accident to occur?

Options:
A. A violent, explosive reaction with possible fire.
B. The formation of a black precipitate with no gas evolution.
C. A gentle effervescence producing a colorless, odorless gas.
D. The reaction mixture turns a deep purple color.
E. None of the above.
output: answer: A

turn: 5
modality: image
input: Please generate the scene of the experimental accident described in the previous question, and show the correct way to handle this accident.
output: evaluation_points: 1. The image correctly represents the phenomenon and state after the accident: e.g., a beaker tipped over or shattered, flames or intense reaction visible, spilled reagents.

2. The image shows the correct accident handling method, which involves smothering the fire with a dry chemical fire extinguisher (Class D recommended for metal fires) or covering with dry sand. Water must NOT be used.

The background and other irrelevant elements remain consistent with the laboratory bench scene from turn 2 output image (e.g., same bench style), with no obvious changes.

The image is clearly modified from the reference image of the normal reaction (turn 3 output image), not a completely newly generated image.