Problem: Which change is a physical change?a) wood burningb) iron rustingc) dynamite explodingd) gasoline evaporating

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We’re being asked which change is a physical change.

Physical change → there is a change in a matter as it goes from one physical state to another.

Chemical change → atoms rearrange themselves to create a new substance. 

a) wood burning

  • Combustion
  • Chemical

b) iron rusting

  • Iron to iron oxide
  • Chemical

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Problem Details

Which change is a physical change?
a) wood burning
b) iron rusting
c) dynamite exploding
d) gasoline evaporating

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