Air Pollution

Multiple Choice

When can filtration be used to separate a mixture?

• When you have a mixture of an insoluble solid and a liquid

           

• When you have a mixture of a soluble solid and a liquid

          

• When you have a mixture of miscible liquids

Multiple Choice

When substances are combined in a mixture, their chemical properties change.

• True

• False

Multiple Choice

When can crystallization be used to separate a mixture?

• When you have a mixture of an insoluble solid and a liquid

           

• When you have a mixture of a soluble solid and a liquid

• When you have a mixture of miscible liquid

Multiple Choice

In fractional distillation, where is the hottest point of the fractioning column?

• the top      

• the middle

• the bottom

Multiple Choice

Electrons were discovered before protons or neutrons.

• True

• False

​-Thomas J. Watson

​“If you want to achieve excellence, you can get there today. As of this second, quit doing less-than-excellent work.”

Burning Sulfur - YouTube

​Watch This

Some text here about the topic of discussion

​Watch the video of the burning of sulfur in the presence of oxygen.

​

What do you think the product is?

​Lesson Objectives

• To list some atmospheric pollutants and complete word equations to describe how atmospheric pollutants can be made.

• ​To describe the health impacts of atmospheric pollutants.

• ​To evaluate the negative social, economic, and environmental consequences of atmospheric pollution.

​Watch This

​https://www.youtube.com/watch?v=2ri95j0cShg

Multiple Choice

Nitrogen forming nitrogen monoxide

• Nitrogen + oxygen à nitrogen dioxide

  N2(g) + 2O2(g) → 2NO2 (g)

• Nitrogen + oxygen à nitrogen monoxide

  N2(g) + O2(g) → 2NO (g)

• hydrocarbon + oxygen à carbon dioxide + water

  CH4(g) + 2O2(g) →  CO2(g) + 2H2O(g)

• hydrocarbon + oxygen à  carbon monoxide + water

  2CH4(g) + 2O2(g) →  2CO(g) + H2O(g)

Multiple Choice

Nitrogen forming nitrogen dioxide

• Nitrogen + oxygen à nitrogen dioxide

  N2(g) + 2O2(g) → 2NO2 (g)

• Nitrogen + oxygen à nitrogen monoxide

  N2(g) + O2(g) → 2NO (g)

• hydrocarbon + oxygen à carbon dioxide + water

  CH4(g) + 2O2(g) →  CO2(g) + 2H2O(g)

• hydrocarbon + oxygen à  carbon monoxide + water

  2CH4(g) + 2O2(g) →  2CO(g) + H2O(g)

Multiple Choice

A hydrocarbon forming carbon dioxide and water

• Nitrogen + oxygen à nitrogen dioxide

  N2(g) + 2O2(g) → 2NO2 (g)

• Nitrogen + oxygen à nitrogen monoxide

  N2(g) + O2(g) → 2NO (g)

• hydrocarbon + oxygen à carbon dioxide + water

  CH4(g) + 2O2(g) →  CO2(g) + 2H2O(g)

• hydrocarbon + oxygen à  carbon monoxide + water

  2CH4(g) + 2O2(g) →  2CO(g) + H2O(g)

Multiple Choice

A hydrocarbon forming carbon, carbon monoxide and water

• Nitrogen + oxygen à nitrogen dioxide

  N2(g) + 2O2(g) → 2NO2 (g)

• Nitrogen + oxygen à nitrogen monoxide

  N2(g) + O2(g) → 2NO (g)

• hydrocarbon + oxygen à carbon dioxide + water

  CH4(g) + 2O2(g) →  CO2(g) + 2H2O(g)

• hydrocarbon + oxygen à  carbon monoxide + water

  2CH4(g) + 2O2(g) →  2CO(g) + H2O(g)

Multiple Choice

Sulfur forming sulfur dioxide

• Sulfur + oxygen à sulfur dioxide

  S(l) + O2(g) → SO2(g)

• Nitrogen + oxygen à nitrogen monoxide

  N2(g) + O2(g) → 2NO (g)

• hydrocarbon + oxygen à carbon dioxide + water

  CH4(g) + 2O2(g) →  CO2(g) + 2H2O(g)

• hydrocarbon + oxygen à  carbon monoxide + water

  2CH4(g) + 2O2(g) →  2CO(g) + H2O(g)

CARBON DIOXIDE:

•A greenhouse gas – absorbs long wavelength radiation and contributes to global warming

SULFUR DIOXIDE:

•Mixes with water vapour in the clouds to form sulfuric acid – acid rain

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​Effects of Pollutants

​NITROGEN OXIDES:

•Toxic

•Can trigger some people’s asthma

•Cause acid rain

CARBON MONOXIDE:

When not enough oxygen is present, incomplete combustion occurs and carbon monoxide is produced instead of carbon dioxide

•Toxic gas – colourless and odourless

•Red blood cells pick up carbon monoxide and carry it in the blood instead of oxygen (binds to haemoglobin)

•Poisoned individual becomes starved of oxygen, drowsy, loses consciousness and eventually die if not removed from the source of the gas

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​Effects of Pollutants

PARTICULATES:

Formed as a result of large molecules not burning completely – tiny solid particles are produced (e.g. soot)

•Can become stuck in the lungs causing respiratory problems and even cancer

•Cause global dimming – travel into upper atmosphere and sunlight is reflected back into space

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​Effects of Pollutants