Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
11th Edition
ISBN: 9781488687075
Author: Lisa, A. Urry
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2.1CR
Compare an element and a Compound.
Expert Solution & Answer
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Summary Introduction
To explain: The difference between a compound and an element.
Introduction: All organisms are composed of matter, which is defined as anything that has mass and occupies space. All matter is made up of one or more chemical elements. An element cannot be further broken down into other chemical substances. When two or more elements combine to form a chemical substance in a fixed ratio, it is called a compound.
Explanation of Solution
Differences between chemical elements and compounds:
An element is the smallest unit of matter. It cannot be further broken down into other chemical substances.
Element | Compound | |
(i.) | It is the made up of only the same type of atoms | It is made up of two or more different elements combined in a fixed ratio. |
(ii.) | It cannot be divided into other chemical substances | It can be broken down into its constituent elements |
(iii.) | 92 naturally-occurring elements have been identified | The number of compounds occurring in nature or synthesized by man is uncountable |
(iv.) | Represented by a chemical symbol | A compound is depicted by writing the symbols of elements from which it is made and their combining ratio |
(v.) | Examples: Carbon (C), Oxygen (O), Nitrogen (N), Sodium (Na), Hydrogen (H) | Example: Water (H2O), glucose (C6H12O6), Common Salt (NaCl), Ammonia (NH3) |
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Chapter 2 Solutions
Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
Ch. 2.1 - MAKE CONNECTIONS Explain how table salt has...Ch. 2.1 - Is a trace element an essential element? Explain.Ch. 2.1 - Prob. 3CCCh. 2.1 - MAKE CONNECTIONS Explain how natural selection...Ch. 2.2 - Prob. 1CCCh. 2.2 - A nitrogen atom has 7 protons, and the most common...Ch. 2.2 - Prob. 3CCCh. 2.2 - Prob. 4CCCh. 2.3 - Why does the structure H C = C H fail to make...Ch. 2.3 - What holds the atoms together in a crystal of...
Ch. 2.3 - What holds the atoms together in a crystal of...Ch. 2.4 - Prob. 1CCCh. 2.4 - Which type of chemical reaction, if any, occurs...Ch. 2.4 - WHAT IF? Write an equation that uses the products...Ch. 2 - Compare an element and a Compound.Ch. 2 - DRAW IT Draw the electron distribution diagrams...Ch. 2 - In terms of electron sharing between atoms,...Ch. 2 - What would happen to the concentration of products...Ch. 2 - Level 1: Knowledge/Comprehension 1. In the term...Ch. 2 - Compared with 31P, the radioactive isotope 32P has...Ch. 2 - The reactivity of an atom arises from (A) the...Ch. 2 - Which Statement is true of all atoms that are...Ch. 2 - Which of the following statements correctly...Ch. 2 - Prob. 6TYUCh. 2 - The atomic number of sulfur is 16. Sulfur combines...Ch. 2 - What coefficients must be placed in the following...Ch. 2 - DRAW IT Draw Lewis dot structures for each...Ch. 2 - EVOLUTION CONNECTION The percentages of naturally...Ch. 2 - SCIENTIFIC INQUIRY Female luna moths (Actias luna)...Ch. 2 - Prob. 12TYUCh. 2 - Prob. 13TYU
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