Chapter 2

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Across
  1. 3. the color that symbolizes good AQI (air quality index)
  2. 7. The systematic name of the compound for water
  3. 8. in a chemical reaction, these appears after the arrow
  4. 10. V in VOCs
  5. 11. the systematic name of the compound CCl4 (write the name without space)
Down
  1. 1. phase change from gas to liquid
  2. 2. the pollutant composed of oxygen
  3. 4. the lowest region of the atmosphere where we live
  4. 5. a chemical reaction where oxygen is reacted with other materials releasing a large amount of energy
  5. 6. added to increase kinetic energy or molecular movements
  6. 9. NOx and SOx are _____________ pollutants