Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 1, Problem 1PS

In the following scenario, identify which of the statements represents a theory, law, or hypothesis. (a) A student exploring the properties of gases proposes that is she decreases the volume of a sample of gas then the pressure exerted by the sample will increase (b) Many scientists over time have conducted similar experiments and have concluded that pressure and volume are inversely proportional. (c) She proposes that the reason this occurs is that if the volume is decreased, more molecules will collide with a given area of the container walls, causing the pressure to be greater.

(a)

Expert Solution
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Interpretation Introduction

Interpretation:

The given statement has to be identified as theory, law or hypothesis.

Concept introduction:

Hypothesis:

A tentative explanation or prediction in accordance with current knowledge.

Law:

A concise verbal or mathematical statement of a behavior or a relation that seems always to be the same under the same conditions.

Theory:

A well tested, unifying principle that explains a body of facts and the laws based on them.  These are explanations of natural phenomenon and they don’t change or any kind of guesses can’t be made.

Answer to Problem 1PS

The given statement is hypothesis.

Explanation of Solution

The given statement is hypothesis, because the student was making a prediction about the property of proposed gases.

(b)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The given statement has to be identified as theory, law or hypothesis.

Concept introduction:

Hypothesis:

A tentative explanation or prediction in accordance with current knowledge.

Law:

A concise verbal or mathematical statement of a behavior or a relation that seems always to be the same under the same conditions.

Theory:

A well tested, unifying principle that explains a body of facts and the laws based on them.  These are explanations of natural phenomenon and they don’t change or any kind of guesses can’t be made.

Answer to Problem 1PS

The given statement is law.

Explanation of Solution

The given statement is law because it conveys about the relationship between pressure and volume.

(c)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The given statement has to be identified as theory, law or hypothesis.

Concept introduction:

Hypothesis:

A tentative explanation or prediction in accordance with current knowledge.

Law:

A concise verbal or mathematical statement of a behavior or a relation that seems always to be the same under the same conditions.

Theory:

A well tested, unifying principle that explains a body of facts and the laws based on them.  These are explanations of natural phenomenon and they don’t change or any kind of guesses can’t be made.

Answer to Problem 1PS

The given statement is theory.

Explanation of Solution

The given statement is theory because the student explains about the reason for the increase in pressure with decrease in volume when the collision occurs at the given area.

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Chapter 1 Solutions

Chemistry & Chemical Reactivity

Ch. 1 - What is meant by the phrase sustainable...Ch. 1 - Prob. 4PSCh. 1 - Prob. 5PSCh. 1 - Prob. 6PSCh. 1 - Give the name of each of the following elements:...Ch. 1 - Give the name of each of the following elements:...Ch. 1 - Give the symbol for each of the following...Ch. 1 - Give the symbol for each of the following...Ch. 1 - In each of the following pairs, decide which is an...Ch. 1 - In each of the following pairs, decide which is an...Ch. 1 - An 18 g sample of water is decomposed into 2 g of...Ch. 1 - A sample of the compound magnesium oxide is...Ch. 1 - In each case, decide if the underlined property is...Ch. 1 - In each case, decide if the change is a chemical...Ch. 1 - Which part of the description of a compound or...Ch. 1 - Which part of the description of a compound or...Ch. 1 - The flashlight in the photo does not use...Ch. 1 - A solar panel is pictured in the photo. When light...Ch. 1 - Determine which of the following represent...Ch. 1 - Prob. 22PSCh. 1 - A hot metal block is plunged into water in a...Ch. 1 - A book is held at a height above the floor. It has...Ch. 1 - Prob. 25GQCh. 1 - Iron pyrite (fool's gold, page 11) has a shiny...Ch. 1 - Which observations below describe chemical...Ch. 1 - Which observations below describe chemical...Ch. 1 - The mineral fluorite contains the elements calcium...Ch. 1 - Azurite, a blue, crystalline mineral, is composed...Ch. 1 - You have a solution of NaCI dissolved in water....Ch. 1 - Small chips of iron are mixed with sand (see...Ch. 1 - Identify the following as either physical changes...Ch. 1 - Identify the following as either physical changes...Ch. 1 - In Figure 1.2 you see a piece of salt and a...Ch. 1 - In Figure 1.5 you see macroscopic and particulate...Ch. 1 - Prob. 37GQCh. 1 - The following photo shows copper balls, immersed...Ch. 1 - Categorize each of the following as an element, a...Ch. 1 - Categorize each of the following as an element, a...Ch. 1 - Make a drawing, based on the kinetic-molecular...Ch. 1 - Make a drawing, based on the kinetic-molecular...Ch. 1 - Hexane (C6H14, density = 0.766 g/cm3),...Ch. 1 - You have a sample of a white crystalline substance...Ch. 1 - You can figure out whether a solid floats or sinks...Ch. 1 - You are given a sample of a silvery metal. 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