Chemical Monitoring and Management
Human activity has caused changes in the composition and the structure of the atmosphere. Chemists monitor these changes so that further damage can be limited
Human activity has caused changes in the composition and the structure of the atmosphere. Chemists monitor these changes so that further damage can be limited
4.1 Describe the composition and layered structure of the atmosphere
4.2 Identify the main pollutants found in the lower atmosphere and their sources
4.3 Describe ozone as a molecule able to act both as an upper atmosphere UV radiation shield and a lower atmosphere pollutant
4.4 Describe the formation of a coordinate covalent bond
4.5 Demonstrate the formation of coordinate covalent bonds using Lewis electron dot structures
4.6 Compare the properties of the oxygen allotropes O2 and O3 and account for them on the basis of molecular structure and bonding
4.7 Compare the properties of the gaseous form of oxygen and the oxygen free radical
4.8 Identify and name examples of isomers (excluding geometrical and optical) of haloalkanes up to eight carbon atoms
4.9 Gather, process and present information from secondary sources including simulations, molecular model kits or pictorial representations to model isomers of haloalkanes
4.10 Identify the origins of chlorofluorocarbons (CFC's) and halons in the atmosphere
4.11 Analyse the information available that indicates changes in atmospheric ozone concentrations, describe the changes observes and explain how this information was obtained
4.12 Present information from secondary sources to write the equations to show the reactions involving CFC's and ozone to demonstrate the removal of ozone from the atmosphere
4.13 Discuss the problems associated with the used of CFC's and assess the effectiveness of steps taken to alleviate these problems
4.14 Present informations from secondary sources to identify alternative chemicals used to replace CFC's and evaluate the effectiveness of their use as a replacement for CFC's
4.2 Identify the main pollutants found in the lower atmosphere and their sources
4.3 Describe ozone as a molecule able to act both as an upper atmosphere UV radiation shield and a lower atmosphere pollutant
4.4 Describe the formation of a coordinate covalent bond
4.5 Demonstrate the formation of coordinate covalent bonds using Lewis electron dot structures
4.6 Compare the properties of the oxygen allotropes O2 and O3 and account for them on the basis of molecular structure and bonding
4.7 Compare the properties of the gaseous form of oxygen and the oxygen free radical
4.8 Identify and name examples of isomers (excluding geometrical and optical) of haloalkanes up to eight carbon atoms
4.9 Gather, process and present information from secondary sources including simulations, molecular model kits or pictorial representations to model isomers of haloalkanes
4.10 Identify the origins of chlorofluorocarbons (CFC's) and halons in the atmosphere
4.11 Analyse the information available that indicates changes in atmospheric ozone concentrations, describe the changes observes and explain how this information was obtained
4.12 Present information from secondary sources to write the equations to show the reactions involving CFC's and ozone to demonstrate the removal of ozone from the atmosphere
4.13 Discuss the problems associated with the used of CFC's and assess the effectiveness of steps taken to alleviate these problems
4.14 Present informations from secondary sources to identify alternative chemicals used to replace CFC's and evaluate the effectiveness of their use as a replacement for CFC's