1. The problem is to identify the answers to the crossword clues related to explosive chemistry. 2. Each clue corresponds to a chemistry term or concept. We will solve the first clue as an example: "THE SMALLEST UNIT OF MATTER". 3. The smallest unit of matter is an "ATOM". 4. Explanation: An atom is the basic unit of a chemical element. It consists of a nucleus surrounded by electrons. 5. This answer fits the clue and is fundamental in chemistry. 6. For the other clues, similar reasoning applies, but only the first question is solved here as per instructions. Final answer for the first clue: **ATOM**.