Why does carbon play a central role in the chemistry of living organisms?
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Transcript of Why does carbon play a central role in the chemistry of living organisms?
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8-1: Properties of CarbonWhy does carbon play a central role in the chemistry of living organisms?
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Anticipatory Set
What do these two things have in common?
They are both made of carbon atoms. The only difference is the
arrangement of the atoms.
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California StandardsScience Standard 8.6.a: Students know that
carbon, because of its ability to combine in many ways with itself and other elements, has a central role in the chemistry of living organisms.
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Inputdiamond: a crystalline form of carbon in
which each carbon atom is bonded strongly to four other carbon atoms.
graphite: a form of carbon in which each carbon atom is bonded tightly to three other carbon atoms in flat layers.
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Inputfullerene: a form of carbon that consists of
atoms arranged in the shape of a hollow sphere.
nanotube: a form of carbon that consists of atoms in the form of a long, hollow cylinder.
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Input & ModelingProperties of Carbon
Carbon plays a central role in the chemistry of living organisms because of its unique ability to combine in many ways with itself and other elements.
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Input & ModelingCarbon Atoms & Bonding
With four valence electrons, each carbon atom is able to form four bonds. Carbon atoms can form straight chains, branched chains, and rings.
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Input & ModelingCarbon Atoms and Bonding
Carbon atoms and the bonds between them can be modeled in several ways.
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Input & ModelingForms of Pure Carbon
At very high temperatures and pressures, carbon atoms can form diamonds.
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Input & ModelingForms of Pure Carbon
Another form of the element
carbon is graphite. In
graphite, each carbon
atom is bonded tightly to
three other carbon atoms
in flat layers.
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Input & ModelingForms of Pure Carbon
In 1985, scientists made a new form of carbon, a fullerene. It consists of carbon atoms arranged in the shape of
a hollow
sphere.
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Input & ModelingForms of Pure Carbon
In 1991, scientists made
another form of carbon,
a nanotube. It consists
of carbon atoms
arranged in the shape
of a long, hollow tube.
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Answer #1-4Guided Practice
Independent PracticeFinish the worksheet.
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HOMEWORK CONNECTION Complete the Section 8-1 Review & Reinforce
Write a detailed SUMMARY of the section and complete the UNANSWERED QUESTIONS section of your notes.
Choose two of the remaining Depth & Complexity ICONS in your notes and explain how they relate to this section.