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Inorganic Chemistry For Dummies®

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Table of Contents

Introduction

About This Book

Conventions Used in This Book

What You Don’t Need to Read

Foolish Assumptions

How This Book Is Organized

Part I: Reviewing Some General Chemistry

Part II: Rules of Attraction: Chemical Bonding

Part III: It’s Elemental: Dining at the Periodic Table

Part IV: Special Topics

Part V: The Part of Tens

Icons Used in This Book

Where to Go from Here

Part I: Reviewing Some General Chemistry

Chapter 1: Introducing Inorganic Chemistry

Building the Foundation

Losing your electrons

Splitting atoms: Nuclear chemistry

Changing pH

Getting a Grip on Chemical Bonding

Traveling Across the Periodic Table

Hyping up hydrogen

Moving through the main groups

Transitioning from one side of the table to another

Uncovering lanthanides and actinides

Diving Deeper: Special Topics

Bonding with carbon: Organometallics

Speeding things up: Catalysts

Inside and out: Bio-inorganic and environmental chemistry

Solid-state chemistry

Nanotechnology

Listing 40 More

Chapter 2: Following the Leader: Atomic Structure and Periodic Trends

Up an’ Atom: Reviewing Atomic Terminology

Sizing up subatomic particles

Knowing the nucleus

Going orbital

Distinguishing atomic number and mass number

Identifying isotopes

Grouping Elements in the Periodic Table

Keeping up with periodic trends

Measuring atomic size

Rating the atomic radius

Eyeing ionization energy

Examining electron affinities

Noting electronegativity

Chapter 3: The United States of Oxidation

Entering the Oxidation-Reduction Zone

Following oxidation state rules

Scouting reduction potentials

Walking through a Redox Reaction

Isolating Elements

Mechanically separating elements

Using thermal decomposition

Displacing one element with another

Heating things up: High-temperature chemical reactions

Relying on electrolytic reduction

Chapter 4: Gone Fission: Nuclear Chemistry

Noting Nuclear Properties

Using the force

The empirical strikes back

Documenting Atomic Decay: Radioactivity

Alpha radiation

Beta radiation

Gamma radiation

The half-life principle

Blind (radiocarbon) dating

Radioisotopes

Catalyzing a Nuclear Reaction

Fission

Fusion

Chapter 5: The ABCs: Acid-Base Chemistry

Starting with the Basics: Acids and Bases

Developing the pH Scale

Calculating pH

Calculating acid dissociation

Touring Key Theories: A Historical Perspective

The early years

Brønsted-Lowry theory

Accepting or donating: Lewis’s theory

Comparing Lewis and Brønsted theories

Pearson’s Hard and Soft Acids and Bases (HSAB)

Characterization of the hard bodies

Who you callin’ soft?

Strapping on a Cape: Superacids

Part II: Rules of Attraction: Chemical Bonding

Chapter 6: No Mr. Bond, I Expect You to π: Covalent Bonding

Connecting the Dots: Lewis Structures

Counting electrons

Placing electrons

Price tags in black ties? Formal charges

Returning to the drawing board: Resonance structures

Keeping Your Distance: VSEPR

Ante Up One Electron: Valence-Bond Theory

Summing It All Up: Molecular Orbital Theory

Types of MOs

Evens and odds: Gerade and ungerade symmetry

Identical twins: Homonuclear diatomic molecules

Fraternal twins: Heteronuclear diatomic molecules

Chapter 7: Molecular Symmetry and Group Theory

Identifying Molecules: Symmetry Elements and Operations

Identity

n-fold rotational axis

Inversion center

Mirror planes

Improper rotation axis

It’s Not Polite to Point! Molecular Point Groups

Being Such a Character Table

Dissecting a character table

Degrees of freedom

A glitch in the matrix: Matrix math

Reducible reps

Infrared and Raman active modes

Chapter 8: Ionic and Metallic Bonding

Blame It on Electrostatic Attraction: Forming Ionic Bonds

Marrying a cation and an anion

Measuring bond strength: Lattice energy

Coexisting with covalent bonds

Conducting electricity in solution

Admiring Ionic Crystals

Studying shapes: Lattice types

Size matters (when it’s ionic)

“I’m Melting!” Dissolving Ionic Compounds with Water: Solubility

Just add water: Hydrated ions

Counting soluble compounds

What Is a Metal, Anyway?

Tracing the history of metallurgy

Admiring the properties of solid metals

Delocalizing electrons: Conductivity

Analyzing alloys

Swimming in the Electron Sea: Metallic Bonding Theories

Free-electron theory

Valence bond theory

Band theory

Chapter 9: Clinging to Complex Ions: Coordination Complexes

Counting bonds

Seeking stability

Grouping geometries

Identifying Isomers

Connecting differently: Structural isomers

Arranged differently: Stereoisomers

Naming Coordination Complexes

Sorting Out the Salts

Creating Metal Complexes throughout the Periodic Table

Alkali metals

Alkali earth metals

Transition metals

Lanthanides and actinides

Metalloids

Applying Coordination Complexes in the Real World

Part III: It’s Elemental: Dining at the Periodic Table

Chapter 10: What the H? Hydrogen!

Visiting Hydrogen at Home: Its Place in the Periodic Table

Appreciating the Merits of Hydrogen

Available in abundance

Molecular properties

Nuclear spin

Introducing Hydrogen Isotopes

Investing in Hydrogen Bonds

Forming a hydrogen ion

Creating hydrides

Applying Itself: Hydrogen’s Uses in Chemistry and Industry

Chapter 11: Earning Your Salt: The Alkali and Alkaline Earth Metals

Salting the Earth: Group 1 Elements

Lithium the outlier

Seafaring sodium

Maintaining your brain with potassium

Rubidium, cesium, francium, oh my

Reacting Less Violently: The Group 2 Alkaline Earth Metals

Being beryllium

Magnificent magnesium

Commonly calcium

Strontium, barium, radium

Diagramming the Diagonal Relationship

Chapter 12: The Main Groups

Placing Main Group Elements on the Periodic Table

Lucky 13: The Boron Group

Not-so-boring boron

An abundance of aluminum

Mendeleev’s Missing Link: Gallium

Increasing indium use

Toxic thallium

The Diamond Club: The Carbon Group

Captivating carbon

Coming in second: Silicon

Germane germanium

Malleable tin cans

Plumbing lead

Noting Pnictides of the Nitrogen Group

Leading the pnictides: Nitrogen

Finding phosphorus everywhere

Melding the metalloids: Arsenic and antimony

Keeping Up with the Chalcogens

Oxygen all around

Sulfur

From the Earth to the moon

Marco — polonium!

(Re)Active Singles: The Group 17 Halogens

Cleaning up with chlorine

Briny bromine

Iodine

Rarely astatine

Lights of New York: The Group 18 Noble Gases

Chapter 13: Bridging Two Sides of the Periodic Table: The Transition Metals

Getting to Know Transition Metals

Sorting T-metals into series

Separating T-metals from the main group

Partially Filling d-Orbitals

Calculating an effective nuclear charge

Forming more than one oxidation state

Splitting the Difference: Crystal Field Theory and Transition Metal Complexes

Dividing d-orbitals

Absorbing light waves: Color

Building attraction: Magnetism

Electronic Structure and Bonding

Reacting with other elements

Creating coordination complexes

Adsorbing gas: T-metals in catalysis

Chapter 14: Finding What Lies Beneath: The Lanthanides and Actinides

Spending Quality Time with the Rare Earth Elements: Lanthanides

Electronic structure

Reactivity

Lanthanide contraction

Separating the lanthanide elements

Using lanthanides

Feelin’ Radioactive: The Actinides

Finding or making actinides

Examining electronic structure

Comparing Reactivity: Actinide versus Lanthanide

Looking More Closely at Uranium

Part IV: Special Topics

Chapter 15: Not Quite Organic, Not Quite Inorganic: Organometallics

Building Organometallic Complexes

Adhering to Electron Rules

Counting to eight: The octet rule

Calculating with the 18-electron rule

Settling for 16 electrons

Effectively using the EAN rule

Bonding with Metals: Ligands

Including Carbon: Carbonyls

Providing the Best Examples

e-precise carbon

e-rich nitrogen

e- deficient boron

Behaving Oddly: Organometallics of Groups 1, 2, and 12

Sandwiched Together: Metallocenes

Clustering Together: Metal-Metal Bonding

Creating Vacancies: Insertion and Elimination

Synthesizing Organometallics

Showing Similarities with Main Group Chemistry

Chapter 16: Accelerating Change: Catalysts

Speeding Things Up – The Job of a Catalyst

Considering Types of Catalysts

Homogenous catalysts

Heterogeneous

Organocatalysts

Chapter 17: Bioinorganic Chemistry: Finding Metals in Living Systems

Focusing on Photosynthesis

Climbing Aboard the Oxygen Transport

Feeding a Nitrogen Fixation

Fixing nitrogen for use by organisms

Re-absorbing nitrogen

Being Human

Making things happen: Enzymes

Curing disease: Medicines

Causing problems: Toxicity

Answering When Nature Calls: Environmental Chemistry

Eyeing key indicators

Rocking the heavy metals

Killing me softly: Pesticides

Looking for and removing contaminants

Chapter 18: Living in a Materials World: Solid-State Chemistry

Studying Solid Structures

Building crystals with unit cells

Labeling lines and corners: Miller indices

Three Types of Crystal Structure

Simple crystal structures

Binary crystal structures

Complex crystal structures

Calculating Crystal Formation: The Born-Haber Cycle

Bonding and Other Characteristics

Characterizing size

Dissolving in liquids: Solubility

Encountering zero resistance: Superconductivity

Information technology: Semiconductors

Synthesizing Solid Structures

Detecting Crystal Defects

Chapter 19: Nanotechnology

Defining nanotechnology

History of nanotechnology

The science of nanotechnology

Top-down versus bottom-up

Nanomaterials

Size and shape control

Self-assembly and gray goo

Applications for Nanotechnology

Cancer therapy

Catalysis

Education

Part V: The Part of Tens

Chapter 20: Ten Nobels

Locating Ligands: Alfred Werner

Making Ammonia: Fritz Haber

Creating Transuranium Elements: McMillan and Seaborg

Adding Electronegativity: Pauling

Preparing Plastics: Ziegler and Natta

Sandwiching Compounds: Fischer and Wilkinson

Illuminating Boron Bonds: Lipscomb

Characterizing Crystal Structures: Hauptman and Karle

Creating Cryptands: Jean-Marie Lehn

Making Buckyballs

Chapter 21: Tools of the Trade: Ten Instrumental Techniques

Absorbing and Transmitting Light Waves: UV-vis and IR

Catching Diffracted Light: XRD

Rearranging Excited Atoms: XRF

Measuring Atoms in Solution: ICP/AA

Detecting Secondary Electrons: SEM

Reading the Criss-Crossed Lines: TEM

Characterizing Surface Chemistry: XPS

Evaporating Materials: TGA

Cyclic Voltammetry

Tracking Electron Spin: EPR

Chapter 22: Ten Experiments

Turning Blue: The Clock Reaction

Forming Carbon Dioxide

The Presence of Carbon Dioxide

Mimicking Solubility

Separating Water into Gas

Testing Conductivity of Electrolyte Solutions

Lemon Batteries

Purifying Hydrogen

Colorful Flames

Making Gunpowder

Chapter 23: Ten Inorganic Household Products

Salting Your Food

Bubbling with Hydrogen Peroxide

Baking with Bicarbonate

Whitening with Bleach

Using Ammonia in Many Ways

Killing Pests with Borax

Soothing Babies with Talc

Cleaning with Lye

Scratching Stainless Steel

Wrapping It Up with Aluminum Foil

Glossary

Cheat Sheet

About the Authors

Michael L. Matson started studying chemistry at the U.S. Naval Academy in Annapolis, Maryland. After leaving the Navy, Michael started a PhD program at Rice University, studying the use of carbon nanotubes for medical diagnosis and treatment of cancer. Specifically, Michael focused on internalizing radioactive metal ions within carbon nanotubes: Some radioactive metals could be pictured with special cameras for diagnosis, whereas others were so powerful they could kill cells for treatment. It was at Rice that Michael and Alvin met. Following Rice, Michael went to the University of Houston-Downtown to begin a tenure-track professorship. Happily married to a woman he first met in seventh grade, Michael has two young children, a yellow Labrador retriever named Flounder, is a volunteer firefighter and sommelier, and enjoys CrossFitting.

Alvin W. Orbaek was introduced to chemistry at Rice University (Houston, Texas) by way of nanotechnology, where he studied single-walled carbon nanotubes, transition metal catalysts, and silver nanoparticles. He had previously received a degree in Experimental Physics from N.U.I. Galway (Ireland) and moved into the study of space science and technology at the International Space University (Strasbourg, France). He received a position on Galactic Suite, an orbiting space hotel. To date, he enjoys life by sailing, snowboarding, and DJing. He has been spinning vinyl records since the Atlantic Hotel used to rave, and the sun would set in Ibiza. He hopes to empower people through education and technology, to that effect he is currently completing a PhD in Chemistry at Rice University.

Dedications

Michael: To my wife, Samantha.

Alvin: To Declan, Ann Gitte, Anton, Anna-livia, and Bedstemor.

Authors’ Acknowledgments

Michael: I’d like to acknowledge the immeasurable amounts of assistance from Matt Wagner, Susan Hobbs, Lindsay Lefevere, Alecia Spooner, and Joan Freedman.

Alvin: Without John Wiley & Sons, there would be no book, and for that I am very grateful. Particularly because of the very positive and professional attitude by which they carry out their business; thanks for getting it done. It was a blessing to work with you. In particular, I would like to mention Alecia Spooner, Susan Hobbs (Suz), and Lindsay Lefevere, and thanks to the technical editors (Reynaldo Barreto and Bradley Fahlman) for their crucial input. I would also like to thank Matt Wagner for invaluable support and assistance. And to Mike Matson, thank you for the invitation to write this book.

I have had many teachers, mentors, and advisors throughout the years, but there are five who deserve attention. Andrew Smith at Coleenbridge Steiner school, where I enjoyed learning a great deal. John Treacy, who made every science class the most riveting class each day. Pat Sweeney, whose habit of teaching would leave anyone engrossed in mathematics. To Ignasi Casanova for his mentorship and introduction to the nanos. And Andrew Barron, both my PhD advisor and mentor, to whom I owe a great deal of credit, due in no small part to his measure of tutelage.

But all this stands upon a firm foundation that is based on the support of Dec, Gitte, Anton, and Anna; here’s to next Christmas — whenever. There are many other friends and family who have contributed to this work, too many to mention them all. But I’d especially like to thank my colleagues from the Irish house, who so graciously agreed to read through the text, namely Alan Taylor, Nigel Alley, and Stuart Corr. Also to Sophia Phounsavath and Brandon Cisneros for proofreading. Jorge Fallas for the Schrödinger equation. To Gordon Tomas for continued support of my writing. And to Gabrielle Novello, who fed me wholesome foods while I otherwise converted coffee and sleepless nights into this book. And to Valhalla for those nights when work was not working for me. And to PHlert, the best sailing program on this planet, or any other.

Publisher’s Acknowledgments

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Some of the people who helped bring this book to market include the following:

Acquisitions, Editorial, and Media Development

Project Editor: Susan Hobbs

Acquisitions Editor: Lindsay Lefevere

Copy Editor: Susan Hobbs

Assistant Editor: David Lutton

Editorial Program Coordinator: Joe Niesen

Technical Editors: Reynaldo Barreto, Bradley Fahlman

Editorial Manager: Carmen Krikorian

Editorial Assistant: Rachelle Amick

Art Coordinator: Alicia B. South

Cover Photo: © Laguna Design / Science Source

Cartoons: Rich Tennant (www.the5thwave.com)

Composition Services

Project Coordinator: Sheree Montgomery

Layout and Graphics: Carrie A. Cesavice, Joyce Haughey, Brent Savage

Proofreaders: Lindsay Amones, John Greenough, Jessica Kramer

Indexer: BIM Indexing & Proofreading Services

Publishing and Editorial for Consumer Dummies

Kathleen Nebenhaus, Vice President and Executive Publisher

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Composition Services

Debbie Stailey, Director of Composition Services

Introduction

Inorganic chemistry deals with all the atoms on the periodic table, the various rules that govern how they look, and how they interact. At first glance, trying to understand the differences among 112 atoms might seem like a mammoth task. But because of the periodic table, we can bunch them up into groups and periods and make them much easier to grasp.

So welcome to Inorganic Chemistry For Dummies. We hope that through this book you come to learn a great deal about the environment around you, what materials you use on a regular basis, and why some materials are more important to us than others. This book is fun and informative, while at the same time insightful and descriptive. And it’s designed to make this fascinating and practical science accessible to anyone, from the novice chemist to the mad scientist.

About This Book

This book was written in such a way that you can start in any chapter you choose, in the chapter that interests you the most, without having to read all the chapters before it. But the chapters build on material from one chapter to the next, so if you feel more background would help you, feel free to start with Chapter 1. You can also make use of the numerous cross references in each chapter to find pertinent information. But it can also be read like a study guide to help a student understand some of the more complicated aspect of this fascinating science.

We tried to make the information as accessible as possible. Each chapter is broken down into bite-sized chunks that make it easy for you to quickly digest and understand the material presented. Some of the chunks are further broken down into subsections when there’s special need to elaborate further on the concepts being discussed.

Science is a process that requires lots of imagination. It requires more imagination than memory, especially as you start to learn more and more about a certain topic. To help with your imagination we have tried to include helpful graphics and artwork that complement the writing within the text. Further to this we include many real-world examples and interesting historical or scientific tidbits to keep your curiosity piqued.

Conventions Used in This Book

Science progressed more rapidly in the last 200 years than it had in the few thousand years previous. A great deal of this success came from the agreement among scientist to create and use a set of standard conventions. The two most important conventions are the periodic table and the international system of units, called SI units. SI units are based on the metric system, and it’s more common to see temperature expressed as Celsius than Fahrenheit. And you see lengths expressed in meters instead of inches and feet. Weights and mass are expressed in terms of grams instead of pounds or stone.

And the following conventions throughout this text make everything consistent and easy to understand:

check.png All Web addresses appear in monofont.

check.png New and key terms appear in italics and are closely followed by an easy-to-understand definition.

check.png Bold text highlights the action part of numbered steps.

What You Don’t Need to Read

Sidebars are highlighted in gray-shaded boxes so they’re easy to pick out. They contain fun facts and curious asides, but none of their information is crucial to your understanding of inorganic chemistry. Feel free to just skip over them if you prefer.

Foolish Assumptions

As authors of Inorganic Chemistry For Dummies we may have made a few foolish assumptions about the readership. We assume that you have very little background in chemistry, and possibly none at all; that you’re new to inorganic chemistry, and maybe you have never heard of the subject before. We assume that you know what chemistry is, but not much more than that. This book begins with all the general chemistry info that you need to grasp the concepts and material in the rest of the book. If you have some understanding of general chemistry, however, all the better.

You may be a medical student who needs to brush up in inorganic chemistry, or a high school student getting ready for a science fair, or even a freshman or junior at college. We’ve tailored this book to meet all your needs, and we sincerely hope you find great explanations about the concepts presented that are also engaging, interesting, and useful.

When you finish reading this book and your interest in chemistry is heightened, we recommend that you go to a local bookseller (second-hand book stores are a personal favorite) and find more books that offer other perspectives on inorganic chemistry. There are also excellent resources on the Internet, and many schools make class notes available online. But the best way to get involved in chemistry is by doing it. Chemistry is a fun and exciting field, made evident when you conduct chemistry experiments. Keep an eye out for demonstration kits that enable you to do your own experiments at home. And note that the last chapter of this book offers ten really cool experiments, too.

How This Book Is Organized

This book is organized into multiple parts that group topics together in the most logical way possible. Here’s a brief description of each section of Inorganic Chemistry For Dummies:

Part I: Reviewing Some General Chemistry

Here you are introduced to science in general, and we give you the basic tenets of general chemistry that help you throughout the rest of the book.

In Chapter 1, you start with an introduction to inorganic chemistry, what it is, and why it is important. You learn how it’s different from organic chemistry and how this difference is important for technology and society.

The following chapters of this section deal with topics that are covered in many general chemistry textbooks, but these chapters cover the topics in greater detail than a general chemistry textbook. In Chapter 2 we explain what the atom looks like, how it’s structured, and why this is important for inorganic chemistry. In particular, this chapter delves into the periodic table and how the structure of the atom is described. Chapter 3 introduces oxidation and reduction chemistry that helps you understand why many chemical reactions take place. It deals with the electrons that each atom has and how the electrons can be shuttled around from atom to atom. Then in Chapter 4 we focus on the nucleus and how changes to the nucleus lead to nuclear chemistry. And finally we end this section by talking about acid-base chemistry because this can help you understand the many ways in which atoms and molecules interact with one another.

Part II: Rules of Attraction: Chemical Bonding

In this section we talk about the various ways that atoms can bond with one another. In Chapter 6 we introduce covalent bonding. Chapter 7 deals with molecular symmetry, not just for inorganic chemistry but also fundamental to many of the physical sciences. Ionic and metallic bonding are detailed in Chapter 8.

Chapter 9, like all of the chapters, can be read as a standalone chapter, but it’s much easier to understand if you read through the three preceding chapters. If you get stuck on coordination complexes, however, refer back to the previous three chapters for a little background information.

Part III: It’s Elemental: Dining at the Periodic Table

The periodic table contains over 100 separate and unique elements, which are described in Part III. We cover all the important elements; and to make it easier to digest, we’ve broken them down into five related chapters. Each chapters deals with elements that are similar to each other, making them easier to understand.

To get the ball rolling we introduce hydrogen in Chapter 10, because it’s the most abundant element in the universe and can be found in many chemicals and materials. We then move from left to right on the periodic table, starting off with the alkali and alkali earth elements in Chapter 11. We guide you through the periodic table to the main group elements in Chapter 12, the transition metals in Chapter 13, and finally round out Part III with the lanthanides and actinides in Chapter 14.

Part IV: Special Topics

These chapters cover what makes the study of inorganic chemistry so interesting and also distinguishes it from organic chemistry. However, you will find a great deal of overlap with other fields of study such as material science, physics, and biology.

Inorganic chemistry became a modern science with the advent of organo­metallic chemistry, described in Chapter 15. Chapter 16 shows you how ­practical and important catalysis is to the modern world in which we live. Chapter 17 deals with the inorganic chemistry of living systems and the environment. The subject matter makes this chapter unique from the others in this section. This is also true for Chapter 18 where we describe solid state chemistry, the basis of the information technology revolution. Chapter 19 gives you a quick introduction to one of the most interesting and promising technological developments of the modern age, namely nanotechnology.

Part V: The Part of Tens

To make this book even easier to grasp and read, we compiled three important lists to help you in your study of inorganic chemistry. In Chapter 20, we introduce and explain ten common household products. Then, in Chapter 21, you meet ten of the most important Nobel Prizes that were awarded to chemists. Chapter 22 introduces ten instruments and techniques that are commonly found and used in laboratories across the globe. And finally we give you ten experiments that you can try out at home in Chapter 23. Remember, one of the most fun parts of chemistry is doing chemistry, and this chapter gives you some fun experiments to try.

Icons Used in This Book

Throughout this book icons are used to draw your attention to certain ­information.

tip.eps This is not often used here, but the Tip icon indicates that some information may be especially useful to you.

remember.eps When you see the Remember icon you should understand that this information is quite important to understanding the concepts being explained. If you are studying inorganic chemistry, this is one of the most important icons to look for. It can indicate a definition, or be a concise explanation of a concept; at other times it indicates information to help you grasp how various concepts overlap.

warning_bomb.eps The Warning icon tells you to pay close attention to what’s being said because it indicates where a potentially dangerous situation may arise.

technicalstuff.eps The Technical Stuff icon is used to indicate detailed information; for some people, it might not be necessary to read or understand.

Where to Go from Here

You might be taking an inorganic chemistry course, or maybe you’re just curious about the world around you. Regardless, if you’re looking for something specific, you can find it by checking the index or maybe even the glossary. When you know where to find what you are looking for, go right ahead and jump in. And enjoy.

Part I

Reviewing Some General Chemistry

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In this part . . .

You navigate through some of the basic rules of the road that help guide you as you travel through the science of inorganic chemistry. This starts with a ­definition of inorganic chemistry and continues with a description of the foundation upon which this subject stands. Inorganic chemistry is the study of all the materials known to humankind, and it includes the study of how all the materials interact with one another.