Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 8SQ
Some people in your study group say they don’t understand what a polar molecule is. You explain that a polar molecule
- a. is slightly negative at one end and slightly positive at the other end.
- b. has an extra electron, giving it a positive charge.
- c. has an extra electron, giving it a negative charge.
- d. has covalent bonds.
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Which of the following statements about chemicalbonds is true?a. Covalent bonds are stronger than ionic bonds.b. Hydrogen bonds occur between two atoms ofhydrogen.c. Bonding readily occurs between nonpolar andpolar molecules.d. A molecule of water is unlikely to bond with anion.
The figure below shows five water molecules. The hydrogen bonds shown in this figure are each
(-)
Hydrogen bond{:
(+)
(+)---(-)
Select one:
a. between an oxygen and a hydrogen atom of different water molecules.
b. between two hydrogen atoms.
d. between an oxygen and a hydrogen atom.of the same water molecule.
d. between two atoms with the same charge.
These are the weakest bonds of all and are sensitive to pH as well as changes in temperature.
a. nonpolar covalent bonds
b. polar covalent bonds c. ionic bonds
hydrogen bonds
Chapter 2 Solutions
Campbell Essential Biology with Physiology (5th Edition)
Ch. 2 - An atom can be changed into an ion by adding or...Ch. 2 - If you change the number of _________, the atom...Ch. 2 - A nitrogen atom has 7 protons; and the most common...Ch. 2 - Why are radioactive isotopes useful as tracers in...Ch. 2 - What is chemically nonsensical about this...Ch. 2 - Why is it unlikely that two neighboring water...Ch. 2 - Which of the following is not a chemical reaction?...Ch. 2 - Some people in your study group say they dont...Ch. 2 - Explain how the unique properties of water result...Ch. 2 - Explain why it is unlikely that life could exist...
Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - Animals obtain energy through a series of chemical...Ch. 2 - Prob. 13PSCh. 2 - Interpreting Data As discussed in the text and...Ch. 2 - Critically evaluate this statement: Its paranoid...Ch. 2 - A major source of the CO2 that causes ocean...
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