1. small planet.   astigmatism   fissure   asteroid   galaxy   Hint Half-n-half Clue   2. chemistry of changing baser metals into gold.   fulcrum   component   alchemy   effervescence   Half-n-half Clue   3. drug that reduces pain.   fulcrum   anodyne   emollient   aureole   Half-n-half Clue   4. medicine that causes vomiting.   emetic   arboretum   cistern   acoustics   Half-n-half Clue   5. united mass or coalition.   humus   galaxy   fusion   equilibrium   Half-n-half Clue   6. post-mortem or examination of dead body.   component   autopsy   contagion   cipher   Half-n-half Clue   7. lizard noted for changing color to surroundings.   chameleon   extrapolation   equinox   eccentricity   Half-n-half Clue