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What Are Covalent Bonds? Fun Facts About Graphite and Diamond

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Zara

12/01/2023

Chemistry

covalent bonding

What Are Covalent Bonds? Fun Facts About Graphite and Diamond

Covalent bonding is a fundamental concept in chemistry, involving the sharing of electrons between non-metal atoms to form strong bonds. This summary explores simple molecular structures and giant covalent structures, highlighting their properties and characteristics.

Bold keywords: Properties of covalent bonds gcse, Simple covalent molecules properties, Simple covalent bond examples, Weak intermolecular forces in simple molecular structures examples, Giant covalent structures graphite vs diamond gcse, Graphite structure, Why can graphite conduct electricity, Why is graphite soft, Why is diamond hard

  • Covalent bonds form between non-metals, sharing electron pairs
  • Simple molecular structures have weak intermolecular forces
  • Giant covalent structures like graphite and diamond have unique properties
...

12/01/2023

975

Chemistry - covalent bonding
•Covalent bonds are formed between non-metals → strong covalent bonds
• Covalent bonds share pairs of electrons

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Simple Molecular Structures and Giant Covalent Structures

Covalent compounds can form either simple molecular structures or giant covalent structures, each with distinct properties.

Simple molecular structures are characterized by:

  1. Low melting and boiling points due to weak intermolecular forces acting between the molecules.
  2. Most small molecules existing as gases or liquids at room temperature.
  3. Increasing intermolecular forces as molecule size increases.
  4. Generally poor electrical conductivity in the solid state.

Highlight: Simple molecular structures have: low melting points, low boiling points, and weak intermolecular forces.

Giant covalent structures, on the other hand, have very different properties:

  1. Graphite: Conducts electricity and heat Has a very high melting point Is soft and slippery
  2. Diamond: Does not conduct electricity Has an extremely high melting point due to its giant lattice structure Is extremely hard

Vocabulary: A giant lattice is a three-dimensional structure of atoms held together by strong covalent bonds.

Example: Giant covalent structures like diamond require a large amount of energy to break their lattice, resulting in very high melting points.

Understanding the differences between simple molecular structures and giant covalent structures is crucial for predicting and explaining the properties of various covalent compounds in chemistry.

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Chemistry

975

12 Jan 2023

2 pages

What Are Covalent Bonds? Fun Facts About Graphite and Diamond

user profile picture

Zara

@zara_wmhm

Covalent bonding is a fundamental concept in chemistry, involving the sharing of electrons between non-metal atoms to form strong bonds. This summary explores simple molecular structures and giant covalent structures, highlighting their properties and characteristics.

Bold keywords: Properties of... Show more

Chemistry - covalent bonding
•Covalent bonds are formed between non-metals → strong covalent bonds
• Covalent bonds share pairs of electrons

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Simple Molecular Structures and Giant Covalent Structures

Covalent compounds can form either simple molecular structures or giant covalent structures, each with distinct properties.

Simple molecular structures are characterized by:

  1. Low melting and boiling points due to weak intermolecular forces acting between the molecules.
  2. Most small molecules existing as gases or liquids at room temperature.
  3. Increasing intermolecular forces as molecule size increases.
  4. Generally poor electrical conductivity in the solid state.

Highlight: Simple molecular structures have: low melting points, low boiling points, and weak intermolecular forces.

Giant covalent structures, on the other hand, have very different properties:

  1. Graphite: Conducts electricity and heat Has a very high melting point Is soft and slippery
  2. Diamond: Does not conduct electricity Has an extremely high melting point due to its giant lattice structure Is extremely hard

Vocabulary: A giant lattice is a three-dimensional structure of atoms held together by strong covalent bonds.

Example: Giant covalent structures like diamond require a large amount of energy to break their lattice, resulting in very high melting points.

Understanding the differences between simple molecular structures and giant covalent structures is crucial for predicting and explaining the properties of various covalent compounds in chemistry.

Chemistry - covalent bonding
•Covalent bonds are formed between non-metals → strong covalent bonds
• Covalent bonds share pairs of electrons

Sign up to see the contentIt's free!

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Improve your grades

Join milions of students

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Covalent Bonding Basics

Covalent bonding is a crucial concept in chemistry, particularly in understanding the formation of molecules. This type of bonding occurs between non-metal atoms and involves the sharing of electron pairs to achieve a stable outer shell configuration.

Definition: Covalent bonding is the sharing of electron pairs between non-metal atoms to form strong chemical bonds.

When two or more atoms are covalently bonded, they form molecules. These molecules can have various shapes and properties depending on the atoms involved and the number of shared electrons.

Highlight: Weak intermolecular forces exist between individual molecules, such as between two water molecules.

The strength of these intermolecular forces plays a significant role in determining the physical properties of covalent compounds.

Example: Examples of covalent molecules include N₂ nitrogennitrogen, Cl₂ chlorinechlorine, HCl hydrogenchloridehydrogen chloride, NH₃ ammoniaammonia, and CO₂ carbondioxidecarbon dioxide.

These molecules are represented using structural formulas that show how the atoms are connected through covalent bonds.

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