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Category: Energy

The Bohr Model

January 23, 2021January 26, 2021 SurfguppyLeave a commentEnergy

In 1913 Niels Bohr proposed a model to describe how energy levels are organized around an atom. While his model is now known to be incorrect, it is useful for understanding energy levels as Bohr’s model closely resembles planets orbiting Read More …

Ionization energy trend

October 25, 2020January 23, 2021 SurfguppyLeave a commentEnergy
Ionization energy trend

Ionization Energy Trend Ionization energy is defined as the amount of energy needed to eject a valence electron from an atom in the gas phase. It is measured in kJ/mol. A valence electron is simply an electron located in the Read More …

Periodic Table Trends

October 25, 2020January 23, 2021 Surfguppy1 CommentEnergy
periodic table

Today, we are going to learn about how the periodic table is organized and the important information that it provides. Scientists discovered that if they arranged the elements according to their atomic number, properties of the elements would occur in Read More …

Electronegativity Bond Scale

October 25, 2015January 24, 2021 Surfguppy1 CommentBonds, Energy, Ionic and Covalent Bonding
Pauling Scale of Electronegativity

Photograph of Linus Pauling: Nobel Foundation, Public domain, via Wikimedia Commons The above is an example of electronegativity bond scale. It shows the different types of chemical bonds formed between atoms based on the electronegativity difference. Bond scale varies slightly Read More …

The Octet Rule of Electron Configuration

November 18, 2014January 24, 2021 Surfguppy2 CommentsEnergy
Valence electron octet rule

What is the Octet Rule of Electron Configuration? Electron configuration is the arrangement of electrons in each energy level or shell of an atom. If the outer shell of an atom is not filled to its maximum level, the atom Read More …

Definition, Obits and Energy Level

March 31, 2014January 23, 2021 Surfguppy1 CommentEnergy
Valence electron octet rule

Definition The valence electrons are the electrons in the outermost shell or last energy level of an atom. valence electrons are electrons in the last shell of an atom Valence electrons are electrons in the highest principal energy level. They Read More …

Electronegativity

March 31, 2014February 10, 2021 SurfguppyLeave a commentEnergy
A polar molecule

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

electronegativity

Categories

THE MOLE

  • The Mole Relationship to Carbon
  • The Mole Concept
  • What is Molecular Mass?
  • How to calculate the number of moles
  • Molar Mass
  • Avogadro’s Constant
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Energy Levls

  • The Bohr Model
  • Ionization energy trend
  • Periodic Table Trends
  • Electronegativity Bond Scale
  • The Octet Rule of Electron Configuration
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Covalent Bonds

  • Carbon to Carbon Bonds
  • Covalent Bonding
  • Nonpolar Covalent Bond
  • Polar Covalent Bond
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Ionic Bonds

  • What is an ionic bond?
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COLLIGATIVE PROPERTIES OF SOLUTION

  • Atmospheric Pressure & Boiling Point
  • Freezing Point Depression
  • Boiling Point Elevation
  • Vapor Pressure Lowering
  • Colligative Properties of Solutions
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Solutions

  • Sublimation
  • Dissociation
  • Osmosis
  • Properties of Colloids
  • Brownian Motion
  • Molality
  • Hydrophobic
  • Solubility
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Thermodynamics

  • Open, Closed & Isolated Systems
  • System and Surroundings
  • Enthalpy Change Calculation
  • Enthalpy, Entropy & Gibbs Free Energy
  • Enthalpy
  • Reaction Spontaneity
  • Hess’s Law
  • Hess Law – Calculation for Methane Formation
  • Understanding Gibbs Free Energy
  • Gibb’s Free Energy – Ammonia
  • Entropy
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Polymers

  • Carbon to Carbon – Single, Double & Triple Bonds
  • Condensation Polymerization
  • Addition Polymerization
  • Types of Plastics and their Classification
  • What is Polymerization?
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Carbohydrates

  • 3 Simple Steps – the Ring Structure of Glucose Molecule
  • Simple Sugars – Monosaccharides
  • Carbohydrates and Sugar
  • 4 Simple Steps – Chain Glucose Molecule
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Categories

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