Question

when is separation of substances necessary? Name four methods used to separate solid substances.

Answer 1

Explanation: The individual substances in a mixture can be separated using different methods, depending on the type of mixture. These methods include filtration, evaporation, distillation and chromatography. If a substance does not dissolve in a solvent, we say that it is insoluble.

Answer 2

Answer:

sᴇᴘᴀʀᴀᴛɪᴏɴ ɪs ɴᴇᴇᴅᴇᴅ ᴛᴏ ʀᴇᴍᴏᴠᴇ ᴜɴᴡᴀɴᴛᴇᴅ sᴜʙsᴛᴀɴᴄᴇs ғʀᴏᴍ ᴍɪxᴛᴜʀᴇ. ᴡᴀᴛᴇʀ ᴄᴏᴍɪɴɢ ᴛᴏ ᴏᴜʀ ʜᴏᴍᴇs ᴄᴏɴᴛᴀɪɴ ɪᴍᴘᴜʀɪᴛɪᴇs sᴜᴄʜ ᴀs ᴄʜᴇᴍɪᴄᴀʟs, sᴍᴀʟʟ ᴅᴜsᴛ ᴘᴀʀᴛɪᴄʟᴇs, ᴍɪᴄʀᴏᴏʀɢᴀɴɪsᴍs ᴇᴛᴄ. ᴅʀɪɴᴋɪɴɢ sᴜᴄʜ ᴡᴀᴛᴇʀ ᴄᴏᴜʟᴅ ᴄᴀᴜsᴇ ʜᴇᴀʟᴛʜ ᴘʀᴏʙʟᴇᴍs. ᴡᴇ ɴᴇᴇᴅ ᴛᴏ sᴇᴘᴀʀᴀᴛᴇ ᴛʜᴇsᴇ ᴜɴᴡᴀɴᴛᴇᴅ sᴜʙsᴛᴀɴᴄᴇs ғʀᴏᴍ ᴡᴀᴛᴇʀ.

sᴏᴍᴇ ᴏғ ᴛʜᴇ ᴄᴏᴍᴍᴏɴ ᴍᴇᴛʜᴏᴅs ᴏғ sᴇᴘᴀʀᴀᴛɪɴɢ sᴜʙsᴛᴀɴᴄᴇs ᴏʀ ᴍɪxᴛᴜʀᴇs ᴀʀᴇ:

• ʜᴀɴᴅᴘɪᴄᴋɪɴɢ.
• ᴛʜʀᴇsʜɪɴɢ.
• ᴡɪɴɴᴏᴡɪɴɢ.
• sɪᴇᴠɪɴɢ.
• ᴇᴠᴀᴘᴏʀᴀᴛɪᴏɴ.
• ᴅɪsᴛɪʟʟᴀᴛɪᴏɴ.
• ғɪʟᴛʀᴀᴛɪᴏɴ ᴏʀ sᴇᴅɪᴍᴇɴᴛᴀᴛɪᴏɴ.
• sᴇᴘᴀʀᴀᴛɪɴɢ ғᴜɴɴᴇʟ.