Air Pollution Lego Lab Name: _____________________________ Part One: Elements and Compounds 1. An atom is the smallest unit of an element. Atoms exist alone or in combination with other atoms. Which color are the following elements represented by? List the color and the symbol. a. Nitrogen: ___________________________ b. Oxygen: ____________________________ c. Sulfur: ____________________________ d. Carbon: ___________________________ e. Hydrogen: _________________________ 2. A compound is a pure substance made up of 2 or more different kinds of atoms bonded together. a. Build the compound carbon dioxide. (CO2). Draw and color the model you made. Drawing: How does CO2 enter the atmosphere? b. Build the compound water. What is its formula? ____________ Draw and color the model you made. Drawing: c. A harmful compound often found in air pollution is sulfur dioxide. What is it’s formula? ______________ Draw and color the model you made. Drawing: How does sulfur dioxide enter the atmosphere? Part Two: Complete Combustion Reactions Combustion reaction is the burning of a fuel to produce carbon dioxide and water. 3. Use the Burning Fuel Card to build the reaction when propane burns completely. Draw and color the reaction: What are the products? Give names and formulas. What are the reactants? Give names and formulas. Write the chemical reaction for this combustion reaction: (Hint: your coefficients should equal the number of lego models for each compound.) How do combustion reactions contribute to climate change? Is CO2 a greenhouse gas? __________ explain. Part Three: Incomplete Combustion Reactions 4. Use the Burning Fuel: Incomplete Combustion Card to build the reaction when propane does not burn completely. Draw and color the reaction: Why can’t the propane fuel burn completely? What are the possible products? What are the reactants? Write the chemical reaction for this combustion reaction: (Hint: your coefficients should equal the number of lego models for each compound.) Why are incomplete combustion reactions bad for our health? Part Four: Air Chemistry and Pollution Use the Air Chemistry and Pollution card for this section. 5. Smog is a collection of air pollutants. Build, draw, and color the four common components of smog. a. Ground ozone: b: Soot: c: Nitrogen dioxide: d: Sulfur dioxide: Have your teacher initial when all is complete. Teacher’s initials: 6. How do each of these pollutants enter our atmosphere? a. Ground ozone: __________________________________________ b. Soot: __________________________________________ c. Nitrogen dioxide: ___________________________________________ d. Sulfur dioxide: ___________________________________________ 7. What are the three pollutants created from incomplete combustion reactions in our car engines? Give the name and formula. a. ______________________________ b. ______________________________ c. ______________________________ Part Five: Air Chemistry and Pollution Reactions Use the Air Chemistry and Pollution Reactions Advanced card for this section. In a synthesis reaction, two or more elements or compounds combine together to create a larger compound. 8. Build an example of a synthesis reaction that occurs when coal is burned. Draw and color the reaction below: Write the equation below. Label the reactants and products. 9. Build an example of a synthesis reaction that occurs when sunlight is present. Draw and color the reaction below: Write the equation below. Label the reactants and products. 10. Build an example of a synthesis reaction that occurs when uv light is present. Draw and color the reaction below: Write the equation below. Label the reactants and products. In a decomposition reaction, a larger compound is broken down into two or more smaller elements or compounds. 11. Build an example of a decomposition reaction that occurs when sunlight is present. Draw and color the reaction below: Write the equation below. Label the reactants and products. 12. Build an example of a decomposition reaction that occurs when uv light is present. Draw and color the reaction below: Write the equation below. Label the reactants and products. 13. When is ozone helpful? ___________________________________________________________ 14. When is ozone harmful? ___________________________________________________________ 15. Build a model of sulfuric acid. Have a teacher initial in the box when the model is built. Teachers initials: What elements are present in this compound? __________________________________________________________ How is this compound formed? __________________________________________________________ What two reactants are needed to create sulfuric acid in the atmosphere? __________________________________________________________ 16. Build a model of octane. Have a teacher initial in the box when the model is built. Teachers initials: What elements are present in this compound? __________________________________________________________ What type of reaction could occur if octane is changed into CO 2 and C? __________________________________________________________ Where is octane found? __________________________________________________________