Question

...... is a decomposition reaction​

Answer 1

$\huge\pink{ᴀɴsᴡᴇʀ }$

ᴀ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴀʟsᴏ ᴄᴏɴsɪᴅᴇʀᴇᴅ ᴛᴏ ʙᴇ ᴀ ᴅᴇᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴ ᴇᴠᴇɴ ᴡʜᴇɴ ᴏɴᴇ ᴏʀ ᴍᴏʀᴇ ᴏғ ᴛʜᴇ ᴘʀᴏᴅᴜᴄᴇs ᴀʀᴇ sᴛɪʟʟ ᴄᴏᴍᴘᴏᴜɴᴅs. ᴀ ᴍᴇᴛᴀʟ ᴄᴀʀʙᴏɴᴀᴛᴇ ᴅᴇᴄᴏᴍᴘᴏsᴇs ɪɴᴛᴏ ᴀ ᴍᴇᴛᴀʟ ᴏxɪᴅᴇ ᴀɴᴅ ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ ɢᴀs. ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ᴄᴀʟᴄɪᴜᴍ ᴄᴀʀʙᴏɴᴀᴛᴇ ᴅᴇᴄᴏᴍᴘᴏsᴇs ɪɴᴛᴏ ᴄᴀʟᴄɪᴜᴍ ᴏxɪᴅᴇ ᴀɴᴅ ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ

Answer 2

A reaction is also considered to be adecomposition reaction even when one or more of the produces are still compounds. A metal carbonate decomposes into a metal oxide and carbon dioxide gas. For example, calcium carbonate decomposes into calcium oxide and carbon dioxide.

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