Covalently Bonded Materials Characteristics

Metallic bonds involve atoms in metals sharing their outer electrons, creating an 'electron sea.' This electron sea allows metals to conduct electricity and heat efficiently.

Materials held together by metallic bonds can conduct electricity and heat efficiently. They also have the unique property of being able to be stretched and shaped without breaking.

Covalent bonds involve the sharing of electron pairs between atoms. Materials held together by covalent bonds tend to have high melting points, low electrical conductivity, and strong directional properties.

<p>Primary bonds, including metallic, covalent, and ionic bonds, are relatively strong and are characterized as the main types of atomic bonding. Secondary bonds, such as Van der Waals bonds, are relatively weaker and originate from a different mechanism.</p> Signup and view all the answers

<p>Ionic bonds form between atoms through the transfer of electrons, resulting in the attraction between positively and negatively charged ions.</p> Signup and view all the answers

<p>The four important mechanisms of atomic bonding in engineered materials are metallic bonds, covalent bonds, ionic bonds, and Van der Waals bonds.</p> Signup and view all the answers

<p>Secondary bonds, such as Van der Waals bonds, are relatively weaker than primary bonds and originate from a different mechanism. Primary bonds, including metallic, covalent, and ionic bonds, are stronger and involve the sharing or transfer of electrons between atoms.</p> Signup and view all the answers

<p>Metals can conduct electricity efficiently due to the 'electron sea' formed by metallic bonds. This allows for the movement of electrons throughout the material.</p> Signup and view all the answers

<p>Covalent bonds play a crucial role in determining the properties of materials by influencing factors like melting points, electrical conductivity, and structural integrity.</p> Signup and view all the answers

<p>Materials held together by covalent bonds tend to have low electrical conductivity because covalent bonds involve the sharing of electron pairs, restricting the movement of charge through the material.</p> Signup and view all the answers