Domain: Chemistry / lab_accident

turn: 1
modality: text
input: Which of the following substances are characterized by being a silvery-white solid at room temperature, having a relatively low density, and reacting with dilute acids to produce hydrogen gas?

Options:
A. Copper (Cu) metal
B. Magnesium (Mg) metal
C. Sodium (Na) metal
D. Iron (Fe) metal
E. Sulfur (S) powder
F. Potassium (K) metal
G. None of the above
output: answer: B, D

turn: 2
modality: image
input: It is known that the target substance is one of the correct options from the previous question. Furthermore, it is a metal that is typically stored in a dry, sealed container to prevent surface oxidation and tarnishing. Please generate an image showing this target substance stored correctly in its appropriate container and placed on a laboratory bench.
output: evaluation_points: 1. The container generated in the image is correct: a sealed glass or plastic reagent bottle or a labeled sample jar.

The substance generated is indeed magnesium metal, appearing as silvery-white, metallic ribbons, turnings, or small chunks, consistent with the description in turn 1 input text: 'silvery-white solid'.

3. The magnesium is shown cleanly contained within the bottle/jar, with an appropriate amount (e.g., filling about half the container). No special storage medium (like oil) is required, as it is stored dry.

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 reacts vigorously with dilute hydrochloric acid, producing a gas. Please generate the state of the experimental setup on the bench during this normal reaction, ensuring all apparatus, material states, and reaction phenomena are reasonable and self-consistent.
output: evaluation_points: 1. The experimental apparatus is correctly selected and used: a test tube or small beaker containing the reaction mixture, possibly with a loose stopper or no lid to allow gas escape.

2. The target substance (magnesium metal) is correctly generated as silvery-white ribbons or turnings within the reaction vessel.

The target substance (magnesium metal) is correctly generated as silvery-white ribbons or turnings within the reaction vessel, consistent with the description in turn 1 input text: 'silvery-white solid'.

4. The reaction phenomenon is consistent with the description: visible, rapid effervescence (bubbles of hydrogen gas) rising from the surface of the magnesium metal.

5. The image background is a laboratory bench.

turn: 4
modality: text
input: If, during the normal reaction described above, the experiment is incorrectly modified by collecting the hydrogen gas in an inverted test tube over water but failing to keep the delivery tube submerged in the water reservoir, what is the most likely accident to occur?

Options:
A. The acid solution violently boils over.
B. Air enters the gas collection tube, contaminating the hydrogen sample.
C. The reaction stops immediately due to lack of pressure.
D. The magnesium metal catches fire spontaneously.
E. None of the above.
output: answer: B

turn: 5
modality: text
input: Regarding the experimental accident described in the previous question, what is the most correct way to handle it?

Options:
A. Immediately add more acid to restart gas production and flush out the air.
B. Carefully re-submerge the delivery tube to resume proper collection, then discard the contaminated gas sample.
C. Seal the top of the collection tube to prevent further air entry and use the gas anyway.
D. Evacuate the laboratory due to risk of explosion.
E. None of the above.
output: answer: B