Question

two type of communication of matter based on their physical properties and chemical nature​

Answer 1

$\huge\pink{ᴀɴsᴡᴇʀ }$

ᴄᴏᴍᴘᴏᴜɴᴅs ᴀʀᴇ ᴅᴇғɪɴᴇᴅ ᴀs sᴜʙsᴛᴀɴᴄᴇs ᴄᴏᴍᴘᴏsᴇᴅ ᴏғ ᴛᴡᴏ ᴏʀ ᴍᴏʀᴇ ᴅɪғғᴇʀᴇɴᴛ ᴇʟᴇᴍᴇɴᴛs ᴛʜᴀᴛ ᴀʀᴇ ᴄʜᴇᴍɪᴄᴀʟʟʏ ᴄᴏᴍʙɪɴᴇᴅ.

ᴀ ᴘʜʏsɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛʏ ɪs ᴀ ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄ ᴛʜᴀᴛ ᴄᴀɴ ʙᴇ ᴏʙsᴇʀᴠᴇᴅ ᴏʀ ᴍᴇᴀsᴜʀᴇᴅ

ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛʏ ɪs ᴀ ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄ ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ ᴛʜᴀᴛ ᴄᴀɴ ᴏɴʟʏ ʙᴇ ᴏʙsᴇʀᴠᴇᴅ ᴅᴜʀɪɴɢ sᴏᴍᴇ ᴛʏᴘᴇ ᴏғ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ.