Connect With Learnsmart Labs Access Card For Biology: Concepts And Investigations
4th Edition
ISBN: 9781259870002
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
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Chapter 2, Problem 4MCQ
Summary Introduction
Introduction:
Water is a universal solvent that dissolves more substances than any other common liquid. Water dissociates into anions and cations and water has a polarity that has positive and negative ends.
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Which of the following describes a buffer?
A. The measure of the amount of hydrogen ions in a liquid
B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH
C. A substance that releases hydrogen ions in water
D. A substance that accepts hydrogen ions in water
This occurs when the cations and anions are attracted to the positive and negative ends of water molecules:
A. ionic bonding
B. dissociation
C. covalent bonding
D. hydrogen bonding
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.
Chapter 2 Solutions
Connect With Learnsmart Labs Access Card For Biology: Concepts And Investigations
Ch. 2.1 - Which four elements do organisms require in the...Ch. 2.1 - Where in an atom are protons, neutrons, and...Ch. 2.1 - What does an elements atomic number indicate?Ch. 2.1 - What is the relationship between the mass of 12C...Ch. 2.1 - Prob. 5MCCh. 2.2 - How are atoms, molecules, and compounds related?Ch. 2.2 - Prob. 2MCCh. 2.2 - Explain how electronegativity differences between...Ch. 2.3 - Prob. 1MCCh. 2.3 - Distinguish between a solute and a solvent and...
Ch. 2.3 - Prob. 3MCCh. 2.3 - Prob. 4MCCh. 2.3 - Prob. 5MCCh. 2.3 - Prob. 6MCCh. 2.4 - How do acids and bases affect a solution's H'...Ch. 2.4 - Prob. 2MCCh. 2.4 - How do buffers regulate the pH of a fluid?Ch. 2.5 - Prob. 1MCCh. 2.5 - Prob. 2MCCh. 2.5 - List examples of carbohydrates, proteins, nucleic...Ch. 2.5 - What is the significance of a protein's shape, and...Ch. 2.5 - What are some differences between RNA and DNA?Ch. 2.5 - Prob. 6MCCh. 2.6 - Prob. 1MCCh. 2.6 - Prob. 2MCCh. 2 - A hydrogen ion (H+) has...Ch. 2 - Prob. 2MCQCh. 2 - Prob. 3MCQCh. 2 - Prob. 4MCQCh. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - The vitamin biotin contains 10 atoms of carbon, 16...Ch. 2 - Distinguish between nonpolar covalent bonds, polar...Ch. 2 - Prob. 3WIOCh. 2 - Prob. 4WIOCh. 2 - Define solute, solvent, and solution.Ch. 2 - Give an example from everyday life of each of the...Ch. 2 - Prob. 7WIOCh. 2 - How do hydrogen ions relate to the pH scale?Ch. 2 - Sketch a monosaccharide, an amino acid, a...Ch. 2 - Prob. 10WIOCh. 2 - You eat a sandwich made of starchy bread, ham, and...Ch. 2 - Prob. 1PITCh. 2 - Prob. 2PITCh. 2 - Besides water, what other molecules are essential...Ch. 2 - 4. Add monomers, polymers, dehydration synthesis,...
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