C1 - Air Quality 5.0 / 5 based on 1 rating ? ChemistryAir QualityGCSEOCR Created by: sophie99Created on: 27-01-14 19:15 623145 Across 1. A chemical that's harmful because it's in the wrong place (9) 4. Also know as combustion (7) 5. A mixture of a liquid and a ground-up solid. (6) 6. CO2 (6, 7) Down 2. Formed when nitrogen and oxygen in the air are exposed to a very high temperature (8, 8) 3. Tiny particles that are in the air (12)
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