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Golden rain

A yellow precipitate that dissolves when hot and comes back as golden crystals.

Topic: Water and solutionsGrade: 10Free

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What you do

  1. Add potassium iodide to the lead(II) nitrate solution.
  2. Heat the tube until the yellow solid disappears (speed ×5).
  3. Stop heating and let it cool. What do you see?

Safety in a real lab

⚠ Lead compounds are toxic: gloves, and collect all waste for safe disposal.

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