| Answer | Crossword Clue |
|---|---|
| BUTYL | Synthetic rubber used in footballs |
| STYRENE | Compound used in synthetic rubber |
| BUTADIENE | Substance used in synthetic rubber. |
| BUTYL | Synthetic rubber used in inner tubes |
| NEOPRENE | Synthetic rubber used for wet suits |
| ISOPRENE | Petroleum byproduct used to make synthetic rubber |
