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Benchmark Practice

Benchmark Practice. Catalyst: 1. Complete the reaction if it undergoes beta decay: 39 19 K  2. Complete the reaction if it undergoes beta decay: 3 1 H  3. Complete for alpha decay: 210 84 Po  4. Complete for alpha decay: 235 92 U . End. Nuclear Chemistry Review and Benchmark Day.

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Benchmark Practice

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  1. Benchmark Practice • Catalyst: 1. Complete the reaction if it undergoes beta decay: 3919K  2. Complete the reaction if it undergoes beta decay: 31H  3. Complete for alpha decay: 21084Po  4. Complete for alpha decay: 23592U  End

  2. Nuclear Chemistry Review and Benchmark Day

  3. Today’s Focus Question • How do fossil fuels work?

  4. Why is carbon in all living matter?

  5. I. Our Friend Carbon • Carbon likes to bond with a lot of atoms. • This is due to its 4 valence electrons • Because of this ability to bond, carbon is essential in all living matter. C

  6. II. Our Friend Carbon • Because of carbon’s unique bonding characteristics, this allows it to form repeating structures. • Large biological molecules are just repeating structures of smaller carbon units.

  7. What is the structure of biological molecules?

  8. I. Amino Acids • Amino acidsare the building blocks of proteins. • Amino acids are connected together to create proteins

  9. II. Nucleotides • DNA is made of repeating units of nucleotides. • Because of carbon’s bonding structure, this allows for many nucleotides to be linked together.

  10. III. Starch • Starch is a common carbohydrate that is made up of smaller repeating carbon rings • Starch is made of repeating glucose rings Starch Glucose

  11. How are fossil fuels connected to biochemistry?

  12. I. Hydrocarbons and Fossil Fuels • Fossil fuels are made of carbon and hydrogen. • Hydrocarbon – Any long chained molecule that contains only carbon and hydrogen bonds.

  13. II. Energy from Fossil Fuels • The bonds in hydrocarbons have energy • When hydrocarbons are combusted (burned), a large amount of energy is released • This large amount of heat/energy can be used to power cars, factories, etc. 2C8H18 + 25O2 18H2O + 16CO2 + Energy

  14. How is nuclear energy?

  15. Nuclear Energy • Nuclear power plants use nuclear fission reactions to generate electricity • The energy of the reaction heats water, which turns a turbine, which generates electrical energy.

  16. SUMMARIZE • Use the following terms in your summary: • Carbon • Fission • Nuclear Energy • Fossil Fuel

  17. Essay Practice • You will be writing an essay that analyzes the differences between nuclear energy and fossil fuels. • This unit focused on the essential question of: what will be the fuel of the future? We studied two main sources of fuel in this unit: nuclear energy and fossil fuels. Write an essay comparing and contrasting the benefits and dangers of nuclear energy and fossil fuels. You should answer the following questions: • What is nuclear fission and what happens when an atom is split into two? • How does nuclear energy use nuclear fission in order to power a turbine in order to generate energy? • Why is carbon such an essential element in all biological molecules? • How do the high energy bonds in carbon allow for the production of energy when fossil fuels are burned?

  18. Stations Review • Station 1 – Forces and Isotopes • Station 2 – Isotopes and Radioactivity • Station 3 – Radioactive Decay • Station 4 – Essay Practice

  19. Tue

  20. Closing Time • Benchmark Time! • PRACTICE YOUR ESSAYS

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