Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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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
Human Biology (MindTap Course List)
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