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Bald Eagle- U.S.A.'s freedoms, spirit and pursuit of excellence Population early 1700s 300,000 to 500,000 1960s less than 1000 Reason: shooting of eagles,

Published byEsmond Henderson Modified over 9 years ago

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Presentation on theme: "Bald Eagle- U.S.A.'s freedoms, spirit and pursuit of excellence Population early 1700s 300,000 to 500,000 1960s less than 1000 Reason: shooting of eagles,"— Presentation transcript:

1 Bald Eagle- U.S.A.'s freedoms, spirit and pursuit of excellence Population early 1700s 300,000 to 500,000 1960s less than 1000 Reason: shooting of eagles, destruction of habitat contamination of waterways and food sources by a wide range of poisons and pollutants the use of DDT pesticide on crops caused thinning of eagle egg shells, which often broke during incubation

2 Experiment 3-Calcium Carbonate in Eggshell Name: ( ) Class Aim: To determine the percentage of CaCO 3 in eggshell Equations involved Theory: -Introduction -explain the theoretical principle underlying an experiment  back titration -Explain how it can be applied to determine the objective of the experiment..

3 Experiment 3-Calcium Carbonate in Eggshell Chemicals: Apparatus: Procedure: past tense and passive voice Data and result: Observation Calculation: % of CaCO 3

4 Conclusion Discussion -sources of error(3pts) -improvement of accuracy of result(3pts) -what is the role of heating in expt.? Question 3 and 4

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