Gamma Decay. Radioactive Decay Alpha Decay Radioactive Decay Alpha Decay Beta Decay.
Benchmark Practice Catalyst: 1. Complete the reaction if it undergoes beta decay: 39 19 K 2....
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Transcript of Benchmark Practice Catalyst: 1. Complete the reaction if it undergoes beta decay: 39 19 K 2....
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Benchmark Practice
• Catalyst:1. Complete the reaction if it undergoes beta decay: 39
19K
2. Complete the reaction if it undergoes beta decay:3
1H
3. Complete for alpha decay:210
84Po
4. Complete for alpha decay:235
92U
End
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Nuclear Chemistry Review and Benchmark Day
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Today’s Focus Question
• How do fossil fuels work?
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Why is carbon in all living matter?
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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
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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.
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What is the structure of biological molecules?
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I. Amino Acids• Amino acids are the building blocks of
proteins.• Amino acids are connected together to create
proteins
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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.
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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
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How are fossil fuels connected to biochemistry?
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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.
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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
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How is nuclear energy?
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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.
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SUMMARIZEUse the following terms in your summary:• Carbon• Fission• Nuclear Energy• Fossil Fuel
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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?
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Stations Review
• Station 1 – Forces and Isotopes• Station 2 – Isotopes and Radioactivity• Station 3 – Radioactive Decay• Station 4 – Essay Practice
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Tue
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Closing Time• Benchmark Time!• PRACTICE YOUR ESSAYS