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7 August, 10:54

Is a fireplace poker glowing red when placed into fire a chemical or physical change

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  1. 7 August, 10:56
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    It is a physical change. The red glow is caused by radiation being emitted by the hot poker as it cools.
  2. 7 August, 11:13
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    A fireplace poker glowing red when placed into fire constitutes a physical change. All that is happening is that (usually) iron poker is being heated and emitting light. There is no change to the chemical properties.
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