Chemistry for Changing Times
Chemistry for Changing Times
14th Edition
ISBN: 9780134212777
Author: John W. Hill; Terry W. McCreary
Publisher: Pearson Education (US)
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Chapter 2, Problem 1RQ

(a)

Interpretation Introduction

Interpretation:

The atomic view and the continuous view of matter should be distinguished.

Concept Introduction:

Matter refers to any substance that occupies some space and has various physical and chemical properties.

(a)

Expert Solution
Check Mark

Answer to Problem 1RQ

Solution:

According to Aristotle’s continuous view, a matter is the smallest part of a substance and it can’t be divided into smaller components.
However, according to Dalton’s atomic view, a matter consists of smaller particles called atoms. Atoms contain various sub-atomic particles like electrons, protons, and neutrons.

Explanation of Solution

A matter is a substance that occupies space. Aristotle found that matter can’t be divided into smaller particles. For this reason, his view is known as the continuous view of the matter.
According to Dalton, a matter consists of smaller particles known as atoms. These atoms provide different physical and chemical properties. For this reason, his view is known as the atomic view of the matter.

(b)

Interpretation Introduction

Interpretation:

The ancient Greek definition of an element and the modern definition of an element should be distinguished.

Concept Introduction:

An element was defined in ancient times and gradually the definition has been modified to obtain a modern definition.

(b)

Expert Solution
Check Mark

Answer to Problem 1RQ

Solution:

During ancient Greek times, an element referred to four elements of nature such as earth, water, air, and fire. According to the modern definition, an element is a substance that contains all similar atoms with the same atomic number and it cannot be converted to simpler forms by chemical reactions.

Explanation of Solution

According to classical thoughts, an element represented four elements of nature which are earth, water, air, and fire. However, according to modern scientists, an element is the simplest form of a substance and contains similar atoms.

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Chapter 2 Solutions

Chemistry for Changing Times

Ch. 2 - In the figure. the blue spheres represent...Ch. 2 - 12. a. How is Avogadro’s number linked with the...Ch. 2 - Prob. 13RQCh. 2 - Prob. 14RQCh. 2 - Prob. 15PCh. 2 - 16. An iron nail dissolves in a solution of...Ch. 2 - If you place a 400 g effervescent antacid pill...Ch. 2 - Prob. 18PCh. 2 - 19, Acetylene, used for welding, contains 24.02 g...Ch. 2 - 20. Nitrous oxide (N2O, "laughing gas") contains...Ch. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - When 18.029 of water is decomposed by...Ch. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - 31. Use Dalton's atomic theory to explain what is...Ch. 2 - Prob. 32PCh. 2 - Hydrogen and oxygen combine in a mass ratio of...Ch. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - A compound containing only oxygen and rubidium has...Ch. 2 - 37. A sample of an oxide of tin with the formula...Ch. 2 - 38. Consider three oxides of nitrogen, X, Y, and...Ch. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - A blue solid called azulene is thought to be a...Ch. 2 - Prob. 46PCh. 2 - Prob. 47APCh. 2 - Prob. 48APCh. 2 - Prob. 49APCh. 2 - Prob. 50APCh. 2 - 51. See Table 2.1 . Another compound of nitrogen...Ch. 2 - Prob. 52APCh. 2 - Prob. 53APCh. 2 - Prob. 54APCh. 2 - Prob. 55APCh. 2 - Prob. 56APCh. 2 - Prob. 57APCh. 2 - Prob. 58APCh. 2 - Prob. 2.1CTECh. 2 - When water is electrolyzed, from each one molecule...Ch. 2 - A health-food store has a large display of...Ch. 2 - Prob. 2.4CTECh. 2 - Prob. 2.5CTECh. 2 - Prob. 2.6CTECh. 2 - Prob. 1CGPCh. 2 - Prob. 2CGPCh. 2 - Prob. 3CGPCh. 2 - Prob. 4CGPCh. 2 - Prob. 5CGPCh. 2 - Materials Needed: Alka-Seltzer tablets (8) 1/4 cup...Ch. 2 - Materials Needed: Alka-Seltzer tablets (8) 1/4 cup...Ch. 2 - Prob. 3CHQ
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