Photochemical Smog

Which product of incomplete combustion gives photochemical smog its yellowish color?

• PANs

• Ozone

• VOCs

• NO2 (nitrogen dioxide)

Common sources of volatile organic compounds include:

• Solvents

• Paint and Glue

• Some Plants

• Petroleum

• All of the Above

Tags

NGSS.MS-PS1-3

What are the main characteristics of urban areas with high levels of photochemical smog?

• Large, open flat plains with frequent high winds

• High winds, wet weather, cloudy, many industries and vehicles

• Located in a basin or surrounded by mountains

• Located in a basin or surrounded by mountains, calm winds, dry weather, sunny, many industries and vehicles

This primary pollutant is a yellowish brown gas and contribute sto the formation of photochemical smog and tropospheric ozone.

• sulfuric acid

• VOC

• nitrogen dioxide

• particulate matter

Tags

NGSS.HS-ESS3-6

Which of the following government agencies is responsible for enforcing the Clean Air Act?

• the USGS

• the USDA

• the EPA

• the USDOJ

A principal component of smog
Source: Chemical reaction catalyzed by SUNLIGHT that splits apart NO2 to eventually form this molecule
Health effects: breathing problems, reduced lung capacity, asthma, eye irritation, reduced resistance to disease
Environmental effects: can damage plants!

• VOCs

• NO2

• SO₂
• O₃

  A smog forming chemical
Source: burning of fossil fuels, cars are a major source, has multiple forms
Health effects: lung damage, respiratory system illnesses
Environmental effects: an ingredient of acid precipitation

• NOx
• CO
• Pb
• VOCs

Tags

NGSS.MS-PS1-2

A smog forming group of molecules
Source: are released from burning fuel (fossil fuels or biomass), solvents, paints glues and other commonly used products.  They include benzene, methane, formaldehyde and others
Health effects: In addition to smog (ozone) effects, some are carcinogenic
Environmental effects: affects some plants directly in addition to smog effects

• PM (particulate matter)
• VOCs
• CO
• Pb

Tags

NGSS.HS-ESS3-6

NGSS.HS-LS2-7

Source burning of wood, diesel and other fuels, agriculture (plowing, burning off fields), unpaved roads , some industry
Health effects: nose and throat irritation, lung damage, bronchitis
Environmental effects: the main cause of haze that redues visibility

• VOCs
• O3
• particulate matter (PM)
• SO₂

What is the most important thing in Photochemical reaction?

• Light

• temperature

• pressure

• catalyst

Tags

NGSS.MS-LS1-6