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C13.7 Atmospheric Pollutants How can we control atmospheric pollutants?

Learning Objectives: Aiming for 4: To describe how carbon monoxide and soot can be made from incomplete combustion of fossil fuels.  Aiming for 6: To explain how sulfur dioxide and nitrogen oxides are made when fossil fuels are combusted. Aiming for 8: To suggest and explain methods to reduce atmospheric pollutants.

What is the difference between complete and incomplete combustion? Which elements do most fuels (including coal) contain? Carbon Hydrogen Sulfur

Teacher Demo: What is being formed during this process? What other dangerous gas may be produced? Complete the following symbol equations to show the incomplete combustion of methane CH4(g) + O2(g) →  _______ +  2H2O(l) 2CH4(g) + 3O2(g) →  ________ + 4H2O(l)

Combustion of fuels is a major source of atmospheric pollutants… What are some atmospheric pollutants? How are they produced? What are the problems with them?

The most common pollutants found in air are: carbon dioxide (CO2) sulfur dioxide (SO2) carbon particulates carbon monoxide (CO) nitric oxides (NOx) How are these molecules produced and how do they affect the environment?

Task Complete the card sort: Place it in order Complete the table

Complete the equations: Balance the Carbon, then Hydrogen, then Oxygen. Construct the word equations Construct the balance symbol equations Copy and Complete: Methane +  + Water Ethane +  + Water Propane +  Carbon Monoxide + Sulfur + Oxygen  Nitrogen + Oxygen ->

Answers:

How can we decrease the atmospheric pollution? Challenge Negative Effects Problem Consequence Social Environmental Economic

Global Dimming Incomplete combustion can produce pollutants like soot (tiny particles of carbon, known as particulates) as well as the very poisonous gas carbon monoxide. Particulates can cause global dimming. Some scientists argue that this global dimming might cancel out the global warming effect of greenhouse gases like carbon dioxide.

Plenary - Pollutant Match