Which use of iron is due to its chemical properties?

producing colored sparks in fireworks
changing from liquid to gas at 2,862°C
conducting electricity and heat
changing from solid to liquid if heated to 1,538°C

Question

Which use of iron is due to its chemical properties?

producing colored sparks in fireworks
changing from liquid to gas at 2,862°C
conducting electricity and heat
changing from solid to liquid if heated to 1,538°C

AndrewArni · Answer

What do u think it is

Mercury · Answer

old question, answering to close

keyword: *chemical* properties. these properties must be observed during a *chemical reaction*.
phase changes, as well as conducting heat/electricity fall under physical changes as these can occur w/o a chemical reaction