| Answer | Crossword Clue |
|---|---|
| case | matter requiring investigation |
| cases | matter requiring investigation |
| case | situation requiring investigation or action (as by the police) |
| chasing | Make further investigation of (an unresolved matter) |
| spectroscopy | The branch of science concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic radiation |
| chemistries | The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances |
