Photochemical Smog

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

• PANs

• Ozone

• VOCs

• NO2 (nitrogen dioxide)

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

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

Tags

NGSS.HS-PS1-5

What is the group of chemicals that are formed from secondary reactions in the atmosphere after things like NO, VOCs, PM, CO and other emissions are released? Hint: It is a main contributor to photochemical smog.

• PANs

• O3

• H2SO4

• HNO3

Tags

NGSS.HS-PS1-5

Which of the following is a secondary pollutant and major component of photochemical smog?

• Carbon monoxide

• Methane

• Formaldehyde

• Radon

• Ozone

What are some sources of Nitrogen Oxides & VOCs when it comes to Photochemical Smog?

• Crude Oil

• Coal

• Emissions from cars

• Life Stock

What three components have to be present to create photochemical smog?

• VOCS, PANS, Carbon Dioxide

• VOCS, Ozone, Nitrogen Monoxide

• Nitrogen Dioxide, Sunlight, and VOCS

• Sulfur Dioxide, Nitrogen Dioxide, and Ozone

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

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.HS-ESS3-6