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Lecture

BIOLOGY LECTURE 2.docx

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Department
Biology
Course
Biology 1001A
Professor
Tom Haffie
Semester
Fall

Description
BIOLOGY LECTURE 2 Why does oil and water not mixWhat is the structure of waterOils are hydrocarbons what is their basic structureWhich is more electronegative carbon or oxygenHow does electronegative affect bonding between moleculesHow does Hydrogen bonding affect bonding between molecules Water is a polar molecule while oils fatty acids and lipids are nonpolar This is what causes oil to not to mix with water A water molecule is composed of one oxygen molecule and two hydrogen molecule while oil is a hydrocarbon and is composed of carbon and hydrogen moleculeSince oxygen has a high electronegativity it attracts the electrons away from the hydrogen which makes oxygen slightly negative and hydrogen slightly positive This is what makes the water molecule polar Unlike oxygen carbon is not very electronegative and so doesnt attract the electrons from Hydrogen and so the oil is nonpolar The polarity of the water
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