1. melt ores for extraction of metal.   partition   invert   smelt   manipulate   Hint Half-n-half Clue   2. unite by intertwining.   initiate   solder   pulverize   splice   Half-n-half Clue   3. disturb or agitate.   perturb   sap   simulate   mesmerize   Half-n-half Clue   4. hinder or prevent.   inhibit   incorporate   transpire   perturb   Half-n-half Clue   5. split into two opposite groups.   polarize   implement   impinge   spawn   Half-n-half Clue   6. model, feign or pretend.   simulate   validate   purge   sublimate   Half-n-half Clue   7. burn without flame in a suppressed manner.   smelt   postulate   smolder   implode   Half-n-half Clue