EBK HUMAN BIOLOGY
11th Edition
ISBN: 8220100545931
Author: MCMILLAN
Publisher: Cengage Learning US
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Textbook Question
Chapter 2, Problem 1RQ
Distinguish between an element, an atom, and a molecule.
Expert Solution & Answer
Summary Introduction
To distinguish: An element, an atom, and a molecule.
Introduction: Chemical bonds link atoms together in a particular arrangement that defines the type of molecules. It unites atoms as a molecule. Electronegativity difference between the atoms determines the type of bond they can form in between them.
Explanation of Solution
Tabular representation: The following table shows the difference between an element, an atom, and a molecule.
Table 1: The difference between an element, an atom, and a molecule
Features | Element | Atom | Molecule |
Definition | A substance that cannot be broken down by chemical means is called an element. | Atoms are the smallest constituent unit of all matter that have the chemical properties. | Molecules are made up of two or more atoms that are chemically bonded to each other. |
Components | It consists of only one kind of atom. | It consists of negatively charged electrons, positively charged protons, and uncharged neutrons. | It consists of more than two atoms that can be either of same element or of different elements. |
Stability | Stable in the presence of at least one natural isotope. | Not stable alone (In order to become stable, they make chemical bonds with other atoms). | Stable alone. |
Separation | It cannot be broken down into a simpler type of matter by either physical or chemical means. | By the chemical reactions, atoms cannot be separated into subatomic particles. Instead, they are separated only by nuclear reactions. | By the chemical reactions, molecule can be separated into atoms. |
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Chapter 2 Solutions
EBK HUMAN BIOLOGY
Ch. 2 - Distinguish between an element, an atom, and a...Ch. 2 - Explain the difference between an ionic bond and a...Ch. 2 - Ionic and covalent bonds join atoms into...Ch. 2 - Name three vital properties of water in living...Ch. 2 - Which small organic molecules make up...Ch. 2 - Which of the following is the carbohydrate, the...Ch. 2 - Describe the four levels of protein structure. How...Ch. 2 - Distinguish among the following: a....Ch. 2 - The backbone of organic compounds forms when...Ch. 2 - A carbon atom can form up ________ to bonds with...
Ch. 2 - All of the following except ________ are building...Ch. 2 - Prob. 4SQCh. 2 - Prob. 5SQCh. 2 - Prob. 6SQCh. 2 - Which phrase best describes what a functional...Ch. 2 - In ________ reactions, small molecules are linked...Ch. 2 - Match each type of molecule with its description....Ch. 2 - What kinds of bonds often control the shape (or...Ch. 2 - The pH of black coffee is 5, and that of milk of...Ch. 2 - Draw a shell model of an uncharged nitrogen atom....Ch. 2 - Prob. 3CTCh. 2 - Manufacturers make carbonated drinks by forcing...
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