BuyFind

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373
BuyFind

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373

Solutions

Chapter
Section
Chapter 1, Problem 1QAP
Textbook Problem

Classify each of the following as element, compound, or mixture.

(a) air

(b) iron

(c) soy sauce

(d) table salt

Expert Solution

a.

Interpretation Introduction

Interpretation: The air should be classified as element, compound, or mixture.

Concept Introduction:

  • A substance that is made up of completely one type of atom is said to be an element.
  • A pure substance that can be separated into other smaller substances by any means that is by chemical or physical is said to be a compound. Two elements can combine in different ratios to from different types of compounds.
  • Two or more substances combined in such a way that the identity of each substance remains unchanged that is they do not react with each other is said to be a mixture.

Answer to Problem 1QAP

Mixture.

Explanation of Solution

The air contains several gases that are dioxygen, O2 , dinitrogen, N2 , and a small amount of carbon dioxide, CO2 and few other gases (some are inert gases). There are small concentrations of sulfur dioxide, SO2 , and nitrogen oxide(s), NOx . All the gases retain their identity in the air hence; it is classified as a mixture.

Expert Solution

b.

Interpretation Introduction

Interpretation: The iron should be classified as element, compound, or mixture.

Concept Introduction:

  • A substance that is made up of completely one type of atom is said to be an element.
  • A pure substance that can be separated into other smaller substances by any means that is by chemical or physical is said to be a compound. Two elements can combine in different ratios to from different types of compounds.
  • Two or more substances combined in such a way that the identity of each substance remains unchanged that is they do not react with each other is said to be a mixture.

Answer to Problem 1QAP

Element.

Explanation of Solution

The iron contains only one type of atom that is Fe and cannot be broken down into simpler substances by any chemical or physical means. Thus, iron is classified as an element. The iron can be characterized by its atomic number (number of protons), Z which is 26. Hence, iron is classified as an element.

Expert Solution

c.

Interpretation Introduction

Interpretation: The soy sauce should be classified as element, compound, or mixture.

Concept Introduction:

  • A substance that is made up of completely one type of atom is said to be an element.
  • A pure substance that can be separated into other smaller substances by any means that is by chemical or physical is said to be a compound. Two elements can combine in different ratios to from different types of compounds.
  • Two or more substances combined in such a way that the identity of each substance remains unchanged that is they do not react with each other is said to be a mixture.

Answer to Problem 1QAP

Mixture.

Explanation of Solution

The soya sauce contains salt, spices, and several flavorings which are not chemically joined with each other and the elements are not present in definite proportions. The particles in soya sauce are consistent visually and mixed thoroughly. Thus, soya sauce is classified as a mixture.

Expert Solution

d.

Interpretation Introduction

Interpretation: The table salt should be classified as element, compound, or mixture.

Concept Introduction:

  • A substance that is made up of completely one type of atom is said to be an element.
  • A pure substance that can be separated into other smaller substances by any means that is by chemical or physical is said to be a compound. Two elements can combine in different ratios to from different types of compounds.
  • Two or more substances combined in such a way that the identity of each substance remains unchanged that is they do not react with each other is said to be a mixture.

Answer to Problem 1QAP

Compound.

Explanation of Solution

The table salt contains sodium chloride, NaCl which can be separated into smaller substances by any means that is chemically or physically. The atoms in NaCl have ionic bonds between them and is made up of two different elements that is sodium, Na and chlorine, Cl . Hence, table salt is classified as a compound.

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Chapter 1 Solutions

Chemistry: Principles and Reactions
Ch. 1 - What instrument would you use to determine (a) the...Ch. 1 - What instrument would you use to (a) measure the...Ch. 1 - A glass of lukewarm milk is suggested for people...Ch. 1 - A recipe for apple pie calls for a preheated 350F...Ch. 1 - Gallium is one of the few metals that can melt at...Ch. 1 - Computers are not supposed to be in very warm...Ch. 1 - How many significant figures are in each of the...Ch. 1 - How many significant figures are there in each of...Ch. 1 - Round off the following quantities to the...Ch. 1 - Round off the following quantities to the...Ch. 1 - Express the following in scientific notation: (a)...Ch. 1 - Express the following measurements in scientific...Ch. 1 - Which of the following statements use only exact...Ch. 1 - Which of the following statements use only exact...Ch. 1 - A basketball game at the University of...Ch. 1 - A listing of a house for sale states that there...Ch. 1 - Calculate the following to the correct number of...Ch. 1 - Perform the indicated calculations. Write your...Ch. 1 - The volume of a sphere is 4r3/3, where r is the...Ch. 1 - The volume of a square pyramid is (1/3)Bh where B...Ch. 1 - Write the appropriate symbol in the blank (,,or=)....Ch. 1 - Write the appropriate symbol in the blank (,,or=)....Ch. 1 - Convert 22.3 mL to (a) liters (b) in3 (c) quartsCh. 1 - Convert 0.2156 L to (a) mL (b) in3 (c) quartsCh. 1 - The height of a horse is usually measured in...Ch. 1 - At sea, distances are measured in nautical miles...Ch. 1 - The unit of land measure in the English system is...Ch. 1 - A gasoline station in Manila, Philippines, charges...Ch. 1 - A lap in most tracks in the United States is 0.25...Ch. 1 - Cholesterol in blood is measured in milligrams of...Ch. 1 - Some states have reduced the legal limit for...Ch. 1 - The area of the 48 contiguous states is 3.02106...Ch. 1 - In Europe, nutritional information is given in...Ch. 1 - In the old pharmaceutical system of measurements,...Ch. 1 - The cup is a measure of volume widely used in...Ch. 1 - The egg whites from four large eggs occupy a...Ch. 1 - A metal slug weighing 25.17 g is added to a flask...Ch. 1 - A solid with an irregular shape and a mass of 11.3...Ch. 1 - A waterbed filled with water has the dimensions...Ch. 1 - Wire is often sold in pound spools according to...Ch. 1 - Air is 21% oxygen by volume. Oxygen has a density...Ch. 1 - The unit for density found in many density tables...Ch. 1 - Magnesium sulfate (MgSO4) has a solubility of 38.9...Ch. 1 - Potassium sulfate has a solubility of 15 g/ 100 g...Ch. 1 - Sodium bicarbonate (baking soda) is commonly use...Ch. 1 - Magnesium chloride is an important coagulant used...Ch. 1 - The solubility of lead nitrate at 100C is 140.0...Ch. 1 - Radiation exposure to human beings is usually...Ch. 1 - The following data refer to the element...Ch. 1 - A supersaturated sugar solution (650.0 g sugar in...Ch. 1 - The density of wind-packed snow is estimated to be...Ch. 1 - The dimensions of aluminum foil in a box for sale...Ch. 1 - The Kohinoor Diamond (d=3.51g/cm3) is 108 carats....Ch. 1 - A pycnometer is a device used to measure density....Ch. 1 - Titanium is used in airplane bodies because it is...Ch. 1 - Label each of the properties of iodine as...Ch. 1 - How do you distinguish (a) chemical properties...Ch. 1 - What is the difference between (a) mass and...Ch. 1 - Mercury, ethyl alcohol, and lead are poured into a...Ch. 1 - How many significant figures are there in the...Ch. 1 - Consider the following solubility graph. (a) At...Ch. 1 - Given the following solubility curves, answer the...Ch. 1 - A Different civilization on a distant planet has...Ch. 1 - At what point is the temperature in F exactly...Ch. 1 - Oil spreads on water to form a film about 100 nm...Ch. 1 - A laboratory experiment requires 12.0 g of...Ch. 1 - An average adult breathes about 8.50103 L of air...Ch. 1 - A student determines the density of a metal by...

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