Human Biology (MindTap Course List)
Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 2, Problem 1RQ

Distinguish between an element, an atom, and a molecule.

Expert Solution & Answer
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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

FeaturesElementAtomMolecule
DefinitionA 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.
ComponentsIt 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.
StabilityStable 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.
SeparationIt 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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