Domain: Chemistry / ball_stick_model

turn: 1
modality: image
input: Generate a single element tile from the periodic table for the element that satisfies the following criteria: It is a nonmetal located in Period 2 and Group 14. The tile must contain the correct element symbol in the center and the correct atomic number in the top-right corner.
output: evaluation_points: 1. The generated content should generally resemble a single tile from the periodic table.

2. The element symbol 'C' must be correctly placed in the center of the tile.

3. The atomic number '6' must be correctly placed in the top-right corner of the tile.

4. The image should be simple, in a flat style, containing only the single periodic table tile with no other content.

turn: 2
modality: text
input: Based on the element symbol and atomic number from the previous image, consider the following: If this element can combine with four hydrogen atoms (H) to form a substance, and this substance is a colorless, odorless gas at room temperature and pressure, is lighter than air, and is the primary component of natural gas, what is the most likely substance formed?

Options:
A. Ammonia (NH3)
B. Methane (CH4)
C. Water (H2O)
D. Carbon Dioxide (CO2)
E. None of the above
output: answer: B

turn: 3
modality: image
input: Generate a ball-and-stick model of the 'target substance' determined in the first half of the task. Use a white background with no text labels. Adhere strictly to the following atomic color scheme: H-white, C-black, O-red, N-blue, Cl-green, S-yellow, P-orange. For any element not listed, use a neutral gray and be consistent.
output: evaluation_points: 1. Correct atom types and counts: One black carbon (C) atom and four white hydrogen (H) atoms.

2. Correct bonding connectivity: Four single bonds, each connecting the central carbon atom to one hydrogen atom.

3. Correct key spatial geometry: A tetrahedral geometry around the central carbon atom should be discernible.

4. Strict adherence to the atomic color mapping: C must be black, H must be white. The same element should not appear in multiple colors.

5. Output is a clear ball-and-stick model: Reasonable proportions between balls and sticks, structure is not overcrowded, background is pure white.

turn: 4
modality: image
input: Based on the ball-and-stick model from the previous turn, modify the molecular structure according to the following rule and generate the modified ball-and-stick model: 'Replace one of the hydrogen atoms bonded to the central carbon atom with a chlorine atom (-Cl).' The rest of the structure, apart from the modified local area, should remain consistent with the input structure. Use the atomic color scheme from the previous question. Use a white background with no text labels.
output: evaluation_points: 1. Correct modification action: Strictly performed a replacement of a hydrogen atom with a chlorine atom.

2. Correct and unique modification site: The replacement occurred at one of the four positions originally occupied by a hydrogen atom bonded to the central carbon. It should not appear on the carbon itself or create a new bond.

3. Self-consistent atom count and bond connectivity after modification: The model should show one black carbon (C) atom, three white hydrogen (H) atoms, and one green chlorine (Cl) atom. The carbon atom should be bonded to three H atoms and one Cl atom via four single bonds, with no dangling bonds.

4. Unmodified structural parts remain consistent: The tetrahedral skeleton and the bonds to the three remaining hydrogen atoms should be consistent with the input structure, allowing for overall rotation or perspective change but not altering connectivity.

Unmodified structural parts remain consistent: The tetrahedral skeleton and the bonds to the three remaining hydrogen atoms should be consistent with the ball-and-stick model generated in Turn 3, allowing for overall rotation or perspective change but not altering connectivity.

Atomic color scheme strictly follows the mapping defined in Turn 3: C is black, H is white, and the newly added Cl is green.