Test II Activities - Copying someone elses work in...

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“Copying someone else’s work in considered plagiarism and an honor code violation. The work completed in this study guide is my own. ” ____________________________ Shreya Maddireddy Carpenter 1 st 8/10/09 Additional Activities Chapter 4 Activity: Diversity of Carbon-Based Molecules Hydrocarbons are compounds composed of only carbon and hydrogen atoms. 1. Length 2. Branched 3. Double Bond 4. Ring Activity: Isomers Compounds of the same molecular formula, but different 3-dimensional structures are called isomers. Despite that they have the same molecular formula, there functions are completely different. A certain type of isomer can cure a disease, while its molecular counterpart cannot. There are three types of isomers: structural isomers (differ in the covalent partnerships between atoms), geometric isomers (vary in arrangement of atoms around a double bond), enantiomers (molecules that are mirror images of each other). 1. A and B are structural isomers. 2. A and B are structural isomers. 3. A and B are not isomers because they are identical molecules. 4. A and B are enantiomers. 5. A and B are geometric isomers. 6. A and B are structural isomers. 7. A and B are not isomers. They have a different molecular formula. 8. A and B are enantiomers. 9. A and B are geometric isomers. 10. A and B are structural isomers. 11. A and B are not isomers. They have a different molecular formula. 12. A and B are not isomers because they are identical molecules. Activity: Functional Groups The distinctiveness of an organic molecule depends on its carbon skeleton and the groups of atoms with distinct properties called functional groups. 1. Functional group – Phosphate Group 2. Functional group – Carbonyl Group 3. Functional group – Sulfhydryl Group 4. Functional group – Amino Group 5. Functional group – Carbonyl Group 6. Functional group – Hydroxyl Group 7. Functional group – Carboxyl Group Question # Description Functional Group Question 1 This functional group is polar because the electronegative oxygen has a strong attraction Hydroxyl Group C H H H H H H
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for electrons. Water is attracted to this group, and therefore molecules that have this group (such as sugars) tend to dissolve in water. Alcohols are characterized by this functional group. Question 2 This group is polar because oxygen has a strong attraction for electrons. If this group is at the end of a carbon skeleton, the molecule is called an aldehyde; otherwise it is called a ketone. Carbonyl Group Question 3 The two electronegative oxygen of this group pull electrons away from the hydrogen atom. This weakens the bond between oxygen and hydrogen, and the hydrogen atom tends to dissociate from the molecule as a hydrogen (H + ) ion. Because it donates hydrogen ions, this group is acidic, and molecules that contain these groups are known as carboxylic acids. Carboxyl Group
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This note was uploaded on 11/16/2009 for the course SCIENCE 2412432 taught by Professor Burns during the Winter '04 term at American University of Science & Tech.

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Test II Activities - Copying someone elses work in...

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