Chapter 2: Atoms, Molecules, and Life

1.	How does a polar covalent bond cause hydrogen bonding to occur? [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
2.	List and describe two properties of water that are based on hydrogen bonding. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
3.	Compare and contrast the properties of acids and bases. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
4.	Why do cells need buffers? How do buffers accomplish their function? [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
5.	Differentiate between inert and reactive atoms. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
6.	Free radicals have been described as dangerous because they steal electrons from the outer orbitals of atoms that make up the tissues of the body. Describe what antioxidants do to counteract the actions of free radicals. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
7.	You drop equal amounts of salt (NaCl) into two different beakers of water. One beaker of water is at room temperature, and the temperature of the second beaker is near its boiling point. Hypothesize which beaker of water will dissolve the salt faster and explain why. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
8.	A snake will preferentially choose a rock rather than a puddle of water to warm itself on a sunny day. Explain the property of water that is responsible for this phenomenon. [Hint] To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.