Domain: Chemistry / apparatus_usage

turn: 1
modality: text
input: Which of the following substances are colorless, odorless gases at room temperature and pressure, and are lighter than air? (Select all that apply)

A. Carbon Dioxide (CO₂)
B. Methane (CH₄)
C. Ammonia (NH₃)
D. Chlorine (Cl₂)
E. Hydrogen (H₂)
F. Sulfur Dioxide (SO₂)
G. None of the above
output: answer: BE

turn: 2
modality: image
input: The target substance is one of the correct options from the previous question. It is a flammable gas that is typically stored in a gas cylinder. Please generate an image showing this target substance being stored correctly in its appropriate container and placed on a laboratory bench.
output: evaluation_points: 1. The container generated in the image is correct; it is indeed a standard gas cylinder (e.g., a compressed gas cylinder with a pressure regulator valve).

2. The substance depicted is indeed methane gas. Its appearance should be consistent with a colorless, invisible gas contained within a cylinder. The cylinder should be clearly labeled with a hazard symbol for flammable gas (e.g., a flame pictogram).

3. The gas is correctly contained within a sealed, pressurized cylinder. The cylinder is shown upright and secured (e.g., with a chain or strap) on the bench. The valve is closed when not in use.

4. The background is a simple laboratory bench scene.

turn: 3
modality: image
input: We will refer to the substance you identified previously as the 'target substance'. When this target substance undergoes complete combustion with oxygen, the Bunsen burner is a key instrument used to initiate and sustain the reaction. Please generate an image depicting the correct use of a Bunsen burner in this combustion reaction scenario. The background is a simple laboratory bench.
output: evaluation_points: 1. The image correctly depicts a Bunsen burner, with its components (base, gas inlet, barrel, air vents) clearly visible. It is placed on a stable, heat-resistant surface on the bench.

2. The reaction scenario involves combustion. A source of the flammable gas (e.g., a gas jet or tube from a gas tap) should be connected to the burner's inlet. The flame should be adjusted to a clean, blue cone (luminous yellow flame indicates incomplete combustion and is incorrect for efficient heating).

3. The Bunsen burner is used correctly: The gas supply is controlled via a tap, the air vents are adjusted to regulate the flame's temperature and color, and the burner is positioned away from flammable materials. Safety considerations like having the burner on a heatproof mat are shown.

4. The background is a simple laboratory bench scene.

turn: 4
modality: text
input: Based on the instrument and operational scene in the input image, which of the following statements regarding the Bunsen burner and its usage are correct? (Select all that apply)

A. The hottest part of a Bunsen burner flame is the tip of the inner blue cone.
B. A yellow, luminous flame indicates optimal air intake for efficient combustion.
C. The gas flow should be turned on at the main valve before lighting the burner.
D. The air vents should be fully closed when initially lighting the burner to prevent flashbacks.
E. The burner should always be placed directly under a fume hood when in use.
F. The barrel of the burner can become very hot during use and should not be touched.
G. None of the above
output: answer: DF