Prompt
The white powder is heated inside the sealed apparatus. The scene visualizes nitrogen dioxide and oxygen as products while a red substance remains. The camera moves to the second demonstration, where the red substance produces mercury and oxygen. The scientist turns toward the viewer with a serious detective expression. Dialogue — Scientist: “ BOOM reveal: “The red substance is mercury oxide because it decomposes into mercury and oxygen. The original white powder definitely contains nitrogen and oxygen, based on the nitrogen dioxide and oxygen products. The evidence also shows mercury is present in the red substance.” On-screen reminder: “Use the evidence. Do not guess beyond it.”
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