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

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15-03-2015
Chemistry

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

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HistoryGuy HistoryGuy · Answer 1 · 2015-03-15T19:28:47-04:00

HistoryGuy HistoryGuy

15-03-2015

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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greyhoundbloke greyhoundbloke · Answer 2 · 2015-03-15T21:12:04-04:00

greyhoundbloke greyhoundbloke

15-03-2015

It is a physical change. The red glow is caused by radiation being emitted by the hot poker as it cools.

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