1. tool with edgeless blade for mixing and spreading.   Hint First letter clue   2. residue from smelting operation.   First letter clue   3. optical illusion due to atmospheric conditions.   First letter clue   4. pattern with balance or harmony.   First letter clue   5. breathing.   First letter clue   6. quantity that can be defined or that can limit.   First letter clue   7. path followed by body under forces.   First letter clue