Burning a log of wood is chemical change and breaking a log of wood is physical change' . Justify it.
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ʙᴜʀɴɪɴɢ ᴏғ ᴡᴏᴏᴅ ɪs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ ʙᴇᴄᴀᴜsᴇ ᴡᴏᴏᴅ ᴏɴ ʙᴜʀɴɪɴɢ ᴄᴏɴᴠᴇʀᴛᴇᴅ ᴛᴏ ɴᴇᴡ sᴜʙsᴛᴀɴᴄᴇs ʟɪᴋᴇ ᴀsʜ (ᴄᴀʀʙᴏɴ), ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ ɢᴀs, ᴡᴀᴛᴇʀ ᴠᴀᴘᴏᴜʀ, ʜᴇᴀᴛ ᴀɴᴅ ʟɪɢʜᴛ. ᴛʜᴇ ᴄʜᴀɴɢᴇ ɪs ɪʀʀᴇᴠᴇʀsɪʙʟᴇ. ᴡʜɪʟᴇ ᴄᴜᴛᴛɪɴɢ ᴏғ ᴡᴏᴏᴅ ɪɴ sᴍᴀʟʟᴇʀ ᴘɪᴇᴄᴇs ɪs ᴀ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴏʀɪɢɪɴᴀʟ ᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ᴏғ ᴡᴏᴏᴅ ᴅᴏᴇs ɴᴏᴛ ᴄʜᴀɴɢᴇ.
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Answer:
ok..............ya its chemical change
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