Is the heating of an electric iron a chemical change or not?
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Iғ ʏᴏᴜ ʜᴇᴀᴛ ᴀɴ ɪʀᴏɴ ʙᴀʀ ᴜɴᴛɪʟ ɪᴛ ɢʟᴏᴡs ʀᴇᴅ ʜᴏᴛ, ɪᴛ ɪs sᴛɪʟʟ ᴄʜᴇᴍɪᴄᴀʟʟʏ ᴛʜᴇ sᴀᴍᴇ ɪʀᴏɴ. Tʜᴇ ɪʀᴏɴ ʜᴀs ɴᴏᴛ ᴄʜᴀɴɢᴇᴅ ɪɴᴛᴏ sᴏᴍᴇᴛʜɪɴɢ ᴇʟsᴇ. ... Exᴀᴍᴘʟᴇs ᴏғ ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇs ᴡᴏᴜʟᴅ ʙᴇ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ᴏғ ɪʀᴏɴ ᴡɪᴛʜ ᴀɪʀ (ʀᴜsᴛɪɴɢ} ᴏʀ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ᴏғ ᴀ ᴍᴇᴛᴀʟ ᴀɴᴅ ᴀᴄɪᴅ. Cᴇʀᴛᴀɪɴ ᴏʙsᴇʀᴠᴀᴛɪᴏɴs ᴡɪʟʟ ɪɴᴅɪᴄᴀᴛᴇ ᴛʜᴀᴛ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ ʜᴀs ᴏᴄᴄᴜʀʀᴇᴅ.
Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs....
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*If you heat an iron bar until it glows red hot, it is still chemically the same iron. The iron has not changed into something else. ... Examples of chemical changes would be the reaction of iron with air (rusting} or the reaction of a metal and acid. Certain observations will indicate that a chemical change has occurred.
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