Domain: Chemistry / ball_stick_model

turn: 1
modality: image
input: Please generate a concise chemical laboratory bench scene: A <watch glass> contains a substance. This substance should have the following observable appearance: <a dark gray to black, solid, layered, flaky or blocky material 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; it is indeed a watch glass.

2. The target substance's color and appearance (dark gray/black, solid, layered/flaky/blocky) conform to the description 'a dark gray to black, solid, layered, flaky or blocky material with a metallic luster'.

3. The substance is appropriately placed on the watch glass (no special storage requirements like immersion in oil are needed for this substance).

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 an excellent conductor of electricity. 2. It has a very high melting point, exceeding 3500°C. 3. It is chemically inert under standard conditions and resistant to most acids.>, please select the substance it most likely is from the following options:

Options:
A. Silicon Dioxide (SiO₂, quartz)
B. Sodium Chloride (NaCl, table salt)
C. Graphite (C)
D. Copper(II) Sulfate Pentahydrate (CuSO₄·5H₂O)
E. None of the above
output: answer: C

turn: 3
modality: image
input: Please generate the ball-and-stick model of the 'target substance' determined in the first half. Use a white background with no text labels or annotations. Please adhere to the following atomic color scheme: H-white, C-black, O-red, N-blue, Cl-green, S-yellow, P-orange; for any elements not listed, use neutral gray and be consistent.
output: evaluation_points: 1. Correct atom types and quantities (consistent with the real molecular composition of the target substance, Graphite, which is an extended network of carbon atoms). The model should represent a sufficient fragment to show the structure (e.g., a hexagonal ring of carbon atoms).

2. Correct bonding connections (key bond connections and branch connections are accurate, overall structure is self-consistent). All carbon atoms should be connected by covalent bonds forming a planar hexagonal network.

3. Correct key spatial configuration (consistent with the common/stable configuration of the target substance; the planar, layered structure should be discernible). The model should clearly show a planar arrangement of atoms.

4. Atomic coloring strictly follows the provided color mapping table and is consistent throughout the image (the same element should not appear in multiple colors). All carbon atoms must be black.

5. The output is a clear ball-and-stick model: reasonable proportions for balls and sticks, uncrowded structure, pure white background.

turn: 4
modality: image
input: Based on the ball-and-stick model generated in the previous turn, please modify the molecular structure once according to the following rule and generate the modified ball-and-stick model: <Replace one of the carbon atoms in the central hexagonal ring of the planar network with a nitrogen atom>. Except for the locally modified part, the rest of the structure should remain consistent with the input structure. Use the atomic color scheme from the previous question. White background, no text labels.
output: evaluation_points: 1. The modification action is correct (strictly conforms to 'Replace one of the carbon atoms in the central hexagonal ring of the planar network with a nitrogen atom').

2. The modification site is unique and correct (targets the specified 'one of the carbon atoms in the central hexagonal ring', not another position).

3. The atomic count and bond connections in the modified structure are self-consistent (no valence errors, dangling bonds, extra bonds, or missing bonds). The nitrogen atom should maintain three bonds within the ring structure.

4. The unmodified structural parts remain consistent (skeletal topology and main configuration are the same as the input; overall rotation/viewpoint changes are allowed but connection relationships must not change).

The unmodified structural parts remain consistent (skeletal topology and main configuration are the same as the ball-and-stick model generated in turn 3; overall rotation/viewpoint changes are allowed but connection relationships must not change).

Atomic coloring strictly follows the atomic color scheme specified in turn 3: H-white, C-black, O-red, N-blue, Cl-green, S-yellow, P-orange; for any elements not listed, use neutral gray and be consistent. Newly added atoms also adhere to this scheme (Nitrogen should be blue).