Question

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Answer 1

Answer:

Burning of wax is chemical change because in burning, wax reacts with oxygen present in surroundings and forms carbon dioxide and ash.

Answer 2

ᎯℕЅᏇℰℛ :-

1) ᴛʜᴇ ᴍᴀᴊᴏʀ ᴏʀɢᴀɴs ᴏғ ᴛʜᴇ ʀᴇsᴘɪʀᴀᴛᴏʀʏ sʏsᴛᴇᴍ ᴀʀᴇ ɴᴏsᴇ , ᴘʜᴀʀʏɴx , ʟᴀʀʏɴx , ᴛʀᴀᴄʜᴇᴀ , ʙʀᴏɴᴄʜɪ ᴀɴᴅ ʟᴜɴɢs .

3) ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ᴏʙᴛᴀɪɴɪɴɢ ᴄʀʏsᴛᴀʟs ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ ғʀᴏᴍ ɪᴛs sᴏʟᴜᴛɪᴏɴ ɪɴ ᴡᴀᴛᴇʀ ɪs ᴄᴀʟʟᴇᴅ ᴄʀʏsᴛᴀʟʟɪᴢᴀᴛɪᴏɴ .

4) ɪɴ ᴇxᴏᴛʜᴇʀᴍɪᴄ ʀᴇᴀᴄᴛɪᴏɴ ʜᴇᴀᴛ ᴡɪʟʟ ʀᴇʟᴇᴀsᴇᴅ .

5) ʙᴜʀɴɪɴɢ ᴏғ ᴡᴀx ɪs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ᴀs ɪᴛ ɪɴᴠᴏʟᴏᴠᴇs ᴄᴏᴍʙᴜsᴛɪᴏɴ ᴀɴᴅ ɢɪᴠᴇs ɴᴇᴡ sᴜʙsᴛᴀɴᴄᴇs ʟɪᴋᴇ : ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ , ᴄᴀʀʙᴏɴ sᴏᴏᴛ , ᴡᴀᴛᴇʀ ᴠᴀᴘᴏᴜʀ , ʜᴇᴀᴛ ᴀɴᴅ ʟɪɢʜᴛ . ᴛʜɪs ɪs ᴀɴ ɪʀʀᴇᴠᴇʀsɪʙʟᴇ ᴄʜᴀɴɢᴇ .

6) ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ғᴇʀᴛɪʟɪᴢᴀᴛɪᴏɴ ᴄᴏɴsɪsᴛs ᴏғ ғᴜsɪᴏɴ ᴏғ ғᴇᴍᴀʟᴇ ᴀɴᴅ ᴍᴀʟᴇ ɢᴀᴍᴇᴛᴇs . ᴀғᴛᴇʀ ᴛʜᴇ ғᴜsɪᴏɴ ɢᴀᴍᴇᴛᴇ ɪs ғᴏʀᴍᴇᴅ .

7) • ᴛʜᴇ ᴘʟᴀɴᴛs ᴛʜᴀᴛ ᴄᴀɴɴᴏᴛ ᴘʀᴏᴅᴜᴄᴇ ᴠɪᴀ sᴇᴇᴅs sᴜᴄʜ ᴀs ʙᴀɴᴀɴᴀ , ɢʀᴀᴘᴇs ᴄᴀɴ ʙᴇ ɢʀᴏᴡɴ ᴇᴀsɪʟʏ ʙʏ ᴠᴇɢᴇᴛᴀᴛɪᴠᴇ ʀᴇᴘʀᴏᴅᴜᴄᴛɪᴏɴ .

• ɪᴛ ɪs ᴀɴ ᴇᴀsɪᴇʀ , ʟᴇss ᴇxᴘᴇɴsɪᴠᴇ , ᴀɴᴅ ᴀ ʀᴀᴘɪᴅ ᴍᴇᴛʜᴏᴅ ᴏғ ᴘʀᴏᴘᴏɢᴀᴛɪᴏɴ .

6) ᴛʜᴇ ᴘʜᴇɴᴏᴍᴇɴᴏɴ ᴏғ ᴄʜᴀɴɢɪɴɢ ʟᴇғᴛ ᴛᴏ ʀɪɢʜᴛ ᴀɴᴅ ʀɪɢʜᴛ ᴛᴏ ʟᴇғᴛ ʙʏ ᴍɪʀʀᴏʀ ᴡʜɪʟᴇ ғᴏʀᴍɪɴɢ ɪᴍᴀɢᴇs ɪs ᴋɴᴏᴡɴ ᴀs ʟᴀᴛᴇʀᴀʟ ɪɴᴠᴇʀsɪᴏɴ .

10) ᴡʜᴇɴ ᴡʜɪᴛᴇ ʟɪɢʜᴛ ᴘᴀssᴇs ᴛʜʀᴏᴜɢʜ ᴀ ᴘʀɪsᴍ , ɪᴛ sᴘʟɪᴛs ɪɴᴛᴏ sᴇᴘᴇʀᴀᴛᴇ ᴄᴏʟᴏᴜʀs . ᴛʜᴇ ʙᴀɴᴅ ᴏғ ᴄᴏʟᴏᴜʀs ᴏʙᴛᴀɪɴᴇᴅ ɪs ᴄᴀʟʟᴇᴅ ᴀ sᴘᴇᴄᴛʀᴜᴍ .

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