Domain: Chemistry / apparatus_usage

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 non-metal located in the second period (row 2) and belongs to Group 14 (IVA). The tile must contain: the correct element symbol in the center, and the correct atomic number in the top right corner. The image should be a simple, flat-style graphic showing only this single periodic table tile with no other content.
output: evaluation_points: 1. The generated content should generally resemble the shape and style of a single tile from the periodic table.

2. The center of the tile must correctly display the element symbol: C (Carbon).

3. The top right corner of the tile must correctly display the atomic number: 6.

4. The image should be simple, flat in style, and contain no content other than this single periodic table tile.

turn: 2
modality: text
input: Based on the element symbol and atomic number from the input image, consider the following: If this element can combine with hydrogen atoms to form a substance, and this substance is a colorless gas at room temperature and pressure, possesses a carbon-carbon double bond, and is a primary component of natural gas and a crucial plant hormone, what is the most likely substance formed?

Options:
A. Methane (CH4)
B. Ethylene (C2H4)
C. Acetylene (C2H2)
D. Ethane (C2H6)
E. None of the above
output: answer: B

turn: 3
modality: image
input: We will now refer to the substance you identified in the previous question as the 'target substance'. In a laboratory setting, when preparing the target substance via the dehydration of ethanol, a specific piece of glassware is essential. Please generate an image depicting the correct use of this instrument in that reaction scenario. The background should be a simple laboratory bench.

(Note: The target substance is ethylene gas, C2H4. The reaction is the dehydration of ethanol using concentrated sulfuric acid as a catalyst and dehydrating agent, typically performed with heating. The key instrument is a Liebig condenser for reflux or a gas collection apparatus.)
output: evaluation_points: 1. The image must correctly depict the key laboratory instrument: a Liebig condenser (or a setup for gas collection, e.g., using a delivery tube into an inverted water-filled graduated cylinder). The instrument should be positioned appropriately on the lab bench.

The depicted reaction must be consistent with the 'dehydration of ethanol': This involves a round-bottom or distillation flask containing the reaction mixture (ethanol and concentrated sulfuric acid), typically with a heat source (e.g., a Bunsen burner or heating mantle) applied. The setup should suggest heating is occurring.

3. The use of the Liebig condenser must conform to correct laboratory practice and safety standards: It should be properly connected for reflux (with water inlet at the bottom and outlet at the top) or, if shown for distillation/gas collection, connected correctly to a receiving flask or gas collection apparatus. All connections should appear secure.

The background must be a simple laboratory bench scene, with minimal clutter, focusing on the reaction setup.

turn: 4
modality: text
input: Based on the instrument and operational scene in the input image, judge which of the following statements about this instrument and its usage specifications are correct.

Options:
A. This instrument is primarily used for heating reaction mixtures directly.
B. When used for reflux, cooling water should enter the condenser from the lower inlet and exit from the upper outlet.
C. It is suitable for condensing vapors of low-boiling-point liquids, such as those generated during the preparation of certain gaseous hydrocarbons.
D. All joints of this apparatus must be greased to ensure they are airtight, especially when collecting gases by water displacement.
E. This type of condenser is typically made of plastic to withstand strong acids.
F. During setup, the condenser should be clamped securely at its midpoint to ensure stability.
G. None of the above are correct.
output: answer: B, C, D