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Across 2. invented in an attempt to obtain phosphorus 6. created because of melted chocolate 8. It was originally created as a cleaning agent 9. a drug created by chance during the study of cardiac drugs 10. the result of Nobel's experiments

Down 1. discovered by Fleming due to mold in a Petri dish 3. opened during the development of sights 4. It was created while trying to make a tonic syrup for headaches and nervous disorders 5. Wilson Greatbatch made a mistake when installing the resistor 7. it was found accidentally while working with coal tar