Presentation on theme: "ENVIRONMENTAL IMPACT OF CHEMICAL REACTIONS (END PRODUCTS)"— Presentation transcript:
1ENVIRONMENTAL IMPACT OF CHEMICAL REACTIONS (END PRODUCTS) Chemical reactions result in new substances being produced that can simultaneously provide both positive and negative environmental impacts.
2Vocabulary : end product: The result of a completed series of processes or changes.environmental impact:Any change to the environment, whether adverse or beneficial, wholly or partially resulting from an organization's activities, products or serviceseconomic impact:Any increase or decrease in the productive potential of the economy.
3The end product was different than the reactant. BURNING PAPER?The end product was different than the reactant.What could have been done with the paper other than burning it or the usefulness of the reactant.While the paper was burning, some pretty useful stuff was produced, such as…….,light and heatREACTANTSCompare it to a campfire …..fire provides light to see and the heat needed to stay warm and cook food.
4ASHES What was the final product, ash, good for? For the most part, ash is not much fun to deal with.It is messy and not very useful.END PRODUCT
5What chemical reactions or uses of chemicals have negative waste products or consequences? If a farmer does not use fertilizer, his crop will not grow as well and he will produce less and make less money, but if he does use fertilizer, the residue may run off into local rivers and ultimately into the ocean which could cause algae blooms that kill off aquatic wildlife.If a farmer does not use pesticides, his crop will suffer and he will produce less and make less money, but if he does use them, levels of toxins can build up in local ground water making the water unfit to drink.
6If a person carpools they help to If a power plant does not control its smokestack emissions, pollution will add to the acid rain effect, but if they put in equipment to control emissions their operating cost and the cost of electricity goes up.If a person carpools they help toproduce less pollution and they save money, but they lose some independence in traveling.
7What chemical reactions or uses of chemicals have negative waste products or consequences? Car (Combustion) exhaustSmoke pollution from industrial plants (release of sulfur dioxide)Fertilizer run offHot water being released from industrial plantsAcid Rain‘Greenhouse’ GasesChemical spills (release of heavy metals)
8Throughout modern history, mankind has had to deal with the negative effects of certain chemicals and the end products of certain chemical reactions.However, many of the mistakes that have been made have beencorrectable through action.
9Two examples of problems that, if not solved, have been greatly improved are acid rain and chemicals affecting the ozone layer.
10Most chemicals and chemical reactions have both good and bad consequences. Many negative impacts can be avoided or corrected once steps are taken to fix the problem, but there are costs involved.
11RESEARCH GOALS:Identify the positive and negative impacts of the chemical or chemical reaction researchedEconomical pros and consEnvironmental pros and cons for either not using the process or for controlling the negative impactsSuggest solutions that can maximize the pros and minimize the cons.
12POSTER REQUIREMENTS: MAIN DRAWING (BY HAND) GRAPHICS (2) FROM INTERNET ECONOMIC/ENVIRONMENTAL PROS & CONSPOSSIBLE SOLUTIONSCREATIVECOLORFUL