1. green coating on old bronze.   patina   prototype   incline   turbulence   Hint Half-n-half Clue   2. array of numbers or symbols; mold or die.   parameter   matrix   objective   residue   Half-n-half Clue   3. supporting bar in framework or pompous walk.   momentum   lumen   strut   symmetry   Half-n-half Clue   4. time when sun is farthest from the equator.   projectile   panacea   solstice   suture   Half-n-half Clue   5. twisting force producing rotation.   torque   symmetry   perigee   strut   Half-n-half Clue   6. terms used in a science or discipline.   perimeter   terminology   whorl   trough   Half-n-half Clue   7. different form of an element.   kaleidoscope   solstice   isotope   mammal   Half-n-half Clue