Organic Chemistry Basics and Functional Groups

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Questions and Answers

Match the following molecules with their chemical classifications based on carbon content:

Water (H2O) = Inorganic Sugar (C6H12O6) = Organic Oxygen (O2) = Inorganic Salt (NaCl) = Inorganic

Match the following hydrocarbon structures with their names:

C2H6 = Alkane C2H4 = Alkene C2H2 = Alkyne CH4 = Alkane

Match the following chemical descriptions with the correct functional groups:

Molecules containing –OH group = Hydroxyl Molecules containing –C=O group = Carbonyl Molecules containing –COOH group = Carboxyl Molecules containing –NH2 group = Amino Group

Match the organic molecules with their molecular formula:

<p>Glucose = C6H12O6 Galactose = C6H12O6 Fructose = C6H12O6 Maltose = C12H22O11</p> Signup and view all the answers

Match the following carbon valence concepts to their definitions:

<p>Valence of 4 = Number of electrons carbon has to share or gain Complete valence shell = Eight electrons are required for stability Four Stable Bonds = Carbon forms four covalent bonds React with many elements = Carbon is versatile</p> Signup and view all the answers

Match the type of bonds carbon can form with their description:

<p>Single bond = Two atoms share one pair of electrons Double bond = Two atoms share two pairs of electrons Triple bond = Two atoms share three pairs of electrons Covalent bond = Sharing of electrons between atoms</p> Signup and view all the answers

Match the following molecules with their bond types:

<p>C3H8 = single bonds C2H4 = double bond C2H2 = triple bond CH4 = single bonds</p> Signup and view all the answers

Match the descriptions with their corresponding terms:

<p>Compounds with carbon and hydrogen = Hydrocarbons Hydrocarbons are = Non-polar molecules Study of carbon-hydrogen bonds = Organic Chemistry Backbone of biological molecules = Carbon</p> Signup and view all the answers

Flashcards

Organic Chemistry

The study of compounds containing carbon-hydrogen bonds. It's crucial for understanding the building blocks of life!

Carbon

An atom that forms the backbone of all biological molecules. It can form four bonds, allowing for the creation of diverse structures.

Organic Compound

Any compound that contains carbon. They are the building blocks of life and form the basis of organic chemistry.

Hydrocarbons

Compounds made up of only carbon and hydrogen atoms. They are non-polar, meaning they don't dissolve in water.

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Structural Formula

Graphical representation of a molecule showing the arrangement of atoms and bonds. It provides a visual understanding of the molecule's structure.

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Functional Group

A group of atoms within a molecule that usually participates in chemical reactions. They give molecules their unique properties and functions.

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Hydroxyl Group

A functional group consisting of a hydrogen atom bonded to an oxygen atom (-OH). Molecules containing this group are called alcohols.

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Line Diagram

A way of representing organic molecules by showing only the carbon skeleton, with each bend and end representing a carbon atom.

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Study Notes

Organic Chemistry Basics

  • Organic chemistry is the study of compounds containing carbon-hydrogen bonds.
  • Carbon is present in all biological molecules.
  • All compounds containing carbon are called "organic compounds."

Functional Groups

  • Functional groups are groups of atoms in an organic molecule that participate in chemical reactions.
  • Hydroxyl: polar; found in alcohols and sugars (-OH)
  • Carbonyl: polar;
    • aldehyde (at the end of the carbon skeleton)
    • ketone (within the carbon chain)
  • Carboxyl: polar, acidic; donates a proton (H+), found in amino acids, fatty acids, some vitamins (-COOH)
  • Amino: polar, basic; accepts a proton (H+), found in proteins, nucleic acids (-NH₂)
  • Sulfhydryl: slightly polar; found in proteins (-SH)
  • Phosphate: polar, negatively charged; found in nucleic acids and energy production (ATP) (-OPO₃²⁻)

Hydrocarbons

  • Hydrocarbons are compounds made of only carbon and hydrogen.
  • They are nonpolar molecules.
  • Classified based on the number of bonds:
    • Alkanes (single bonds)
    • Alkenes (double bonds)
    • Alkynes (triple bonds)

Representing Organic Molecules

  • Molecular Formulas: represent the number of atoms of each element in a molecule.
  • Structural Formulas: show the arrangement of atoms in a molecule.
  • Modified Structural Formulas: simplify structural formulas by omitting some hydrogen atoms.
  • Line Diagrams (Skeletal Formulas): further simplify structural formulas by representing bonds as lines

Checking for Understanding (Examples)

  • Organic Compounds (check page 4): Sugar (C₆H₁₂O₆), Cholesterol (C₂₇H₄₆O)
  • Draw Structural Formulas (check page 9): Students need to draw formulas for various hydrocarbons based on their number of bonds (single, double, or triple).

Carbon

  • Valence of 4
  • Can react with many elements.
  • forms single, double or triple bonds with other carbons atoms.

Carbon Dating

  • Cosmic rays create neutrons.
  • Neutrons react with nitrogen-14, forming carbon-14.
  • Plants absorb carbon-14.
  • Animals eat plants containing carbon-14.
  • Carbon-14 decays to nitrogen-14 after an organism dies.
  • This is used to determine the age (time-elapsed) in biological artifacts (bones, wood, etc.)

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