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Chemistry (CP)

Module 1 · Text Lab Safety
Module 2 · Text The Scientific Method
Module 3 · Media Law Vs. Theory
Module 4 · Media Accuracy Vs. Precision
Module 5 · Text Sig-Figs and Scientific Notation
Module 6 · Text Matter
Module 7 · Text Displacement
Module 8 · Text Density
Module 9 · Text SI Units
Module 10 · Media Dimensional Analysis
Module 11 · Media The Periodic Table
Module 12 · Text Isotopes
Module 13 · Text Nuclear Reactions
Module 14 · Text Nuclear Fission and Fusion
Module 15 · Text Chemical Vs. Nuclear Reaction
Module 16 · Text Electron Shells
Module 17 · Text Ions
Module 18 · Text Solubility and Conductivity
Module 19 · Media Types of Bonding
Module 20 · Text Chemical Formulas
Module 21 · Text Functional Groups
Module 22 · Text Electron Domains
Module 23 · Text Polarity You are here
Module 24 · Text Chemical Equations
Module 25 · Text Physical Vs. Chemical Change
Module 26 · Text Types of Reactions
Module 27 · Text Moles
Module 28 · Text Solubility and Molarity
Module 29 · Media Miracle Moles
Module 30 · Text Acids and Bases
Module 31 · Media pH and pOH
Module 32 · Text Dilutions
Module 33 · Text Neutralization Reactions and Titrations
Module 34 · Text Mol Ratios
Module 35 · Media Stoichiometry
Module 36 · Text Endothermic and Exothermic Energy Transfer
Module 37 · Text Specific Heat
Module 38 · Media Heating and Cooling Curves and Phase Change
Module 39 · Text Gas Laws and Kinetic Molecular Frequency.

Close the course

Module 23 of 39 · Text

Polarity

Enyx Jiang

Polarity

Static electricity
- When two different materials are rubbed together, some electrons can transfer
  - This results in an imbalance of positive and negative charges
Partial charges at different locations on a molecule cause a polar molecule
- Polar molecules are attracted to each other
Polar Molecules: Molecules that are attracted to a charge because they have partial charges on them; one side is slightly negative and the other side is slightly positive
Non-Polar Molecules: Molecules that are not attracted to a charge

Attractive molecules
- Partial Charges- molecules don’t share their electrons equally
  - Polar molecules; have a dipole moment
- Non-polar molecules- share their electrons equally; have no charge
  - 2 polar bonds may cancel out if they are going in opposite directions
- Intermolecular Forces- Attraction between molecules (not within)
  - Forces that hold liquids and solids together
    - When a substance melts or boils intermolecular forces are broken
    - When a substance condenses or freezes, intermolecular forces are formed