2011_Spring_Final_key - CHEMISTRY 1A Spring 2011 Final Exam...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 CHEMISTRY 1A Spring 2011 Final Exam Key YOU MIGHT FIND THE FOLLOWING USEFUL;  0.008314 kJ ( n)RT R = K• mol     cal w 0.00418 kJ q C m T gC H rxn = H f (products) H f (reactants) Electronegativities H 2.2 Li Be B C N O F 0.98 1.57 2.04 2.55 3.04 3.44 3.98 Na Mg Al Si P S Cl 0.93 1.31 1.61 1.9 2.19 2.58 3.16 K Ca Ga Ge As Se Br 0.82 1.0 1.81 2.01 2.18 2.55 2.96 Rb Sr In Sn Sb Te I Xe 0.82 0.95 1.78 1.96 2.05 2.1 2.66 2.6 Cs Ba Tl Pb Bi Po 0.79 0.89 2.33 2.02 2.0 2.2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Answer the following by writing the word, words, letter, letters or number in each blank that best completes each sentence. (1 point each blank) 1. The elements in group 2 or 2A on the periodic table are called alkaline earth metals. 2. The intermolecular attraction between a nitrogen, oxygen, or fluorine atom of one molecule and a hydrogen atom bonded to a nitrogen, oxygen, or fluorine atom in another molecule is called a(n) hydrogen bond . 3. Isomers are compounds that have the same molecular formula but different molecular structures. 4. The gas in a solution of a gas in a liquid, the solid in a solution of a solid in a liquid, or the minor component in other solutions is called a(n) solute . 5. A(n) weak electrolyte is a substance that ionizes or dissociates incompletely in an aqueous solution. 6. A(n) strong acid is an acid that donates its H ions to water in a reaction that goes completely to products. Such a compound produces close to one H 3 O ion in solution for each acid molecule dissolved in water. 7. Any chemical change in which at least one element gains electrons, either completely or partially is called reduction . 8. Potential energy is a retrievable, stored form of energy an object possesses by virtue of its position or state. 9. A(n) endothermic change is a change that leads to heat energy being absorbed from the surroundings. 10. A(n) trans isomer is a structure that has like groups on different carbons (which are linked by a double bond) and on the different sides of the double bond. 11. Hydrogenation is a process by which hydrogen is added to an unsaturated triglyceride to convert double bonds to single bonds. This can be done by combining the unsaturated triglyceride with hydrogen gas and a platinum catalyst. 12. A polar molecule or ion (or a portion of a molecule or polyatomic ion) that is attracted to water is called hydrophilic . 13. A(n) catalyst is a substance that speeds a chemical reaction without being permanently altered itself. 14. A(n) peptide bond is an amide functional group that forms when the carboxylic acid group on one amino acid reacts with the amine group of another amino acid. 15. A(n) disulfide bond is a covalent bond between two sulfur atoms of two different amino acids in a protein molecule.
Background image of page 2
3 16. A(n) salt bridge is an attraction between a negatively charged side chain and a positively charged side chain in a protein molecule.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/03/2012 for the course CHEM 100 taught by Professor Mark during the Fall '06 term at Monterey Peninsula College.

Page1 / 11

2011_Spring_Final_key - CHEMISTRY 1A Spring 2011 Final Exam...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online