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Material

In: English and Literature

Submitted By meemaa
Words 874
Pages 4
Dr. Ramadan ELgamsy

 INTRODUCTION

Dr. Ramadan ELgamsy

What Are Materials?
Substances out of which all things are made
What materials are present in the classroom?

Dr. Ramadan ELgamsy

Material History
Materials continue to change the world. Advancements in materials, technology, and science create continued advancement possibilities for

Materials Advancements
Dr. Ramadan ELgamsy

Material Composition
Elements Consist of only one type of particle or atom Cannot be broken down Criteria for element classification

Based on individual properties
Grouped according to shared properties

Dr. Ramadan ELgamsy

Material Composition - Elements
Classification of Elements Divided into three categories based on
Physical Properties – Boiling point, melting point, density, color, hardness, and texture Chemical Properties – Reactivity to acid, oxygen, and flammability

Elements

Metals

Nonmetals
Dr. Ramadan ELgamsy

Metalloids

Material Composition - Elements
Metal Elements
Distinguishing Characteristics

Good conductors of heat and electricity, hard, shiny, reflect light, malleable, ductile, typically have one to three valence electrons

Dr. Ramadan ELgamsy

Material Composition - Elements
Nonmetal Elements Distinguishing Characteristics Most are gases at room temperature
Solids are dull, brittle, and powdery; electrons are tightly attracted and restricted to one atom; poor conductors of heat and electricity

Dr. Ramadan ELgamsy

Material Composition - Elements
Metalloids
Distinguishing Characteristics Possess both metallic and nonmetallic properties

Dr. Ramadan ELgamsy

Material Composition - Compounds Compounds
Most substances are compounds Compounds are created when two or more elements are chemically combined Properties are different than the elements from which the compound was created

Dr. Ramadan...

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