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Water Molecule Packet

Water Molecule Packet . Book Notes Review Pgs. 54-57. Polar Molecule: Molecule with a partial charge on opposite ends. One end is slightly negative and the other end is slightly positive. What makes a molecule polar? Shared electrons are attracted more strongly to one atom than the other.

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Water Molecule Packet

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  1. Water Molecule Packet Book Notes Review Pgs. 54-57

  2. Polar Molecule: • Molecule with a partial charge on opposite ends. • One end is slightly negative and the other end is slightly positive. • What makes a molecule polar? • Shared electrons are attracted more strongly to one atom than the other.

  3. Solubility: • The ability of a polar molecule to attract opposite charges. • Give an example of something that can be dissolved by water: • Sugar or salt • Give an example of something that cannot be dissolved by water: • Oil, grease or wax • Hydrogen Bond: • The attraction between two polar molecules

  4. Most unique properties of water result because: • Water molecules form hydrogen bonds with each other. • What causes Ice to float? • When water freezes into ice, empty spaces form between the water molecules making ice less dense than water. • Why does it take a long time for a large amount of water to change temperature? • Hydrogen bonds are constantly breaking and forming between water molecules causing water to absorb a lot of heat without changing temperature.

  5. What is Cohesion? • The attraction between particles of the same substance. (water attracted to water) • What is adhesion? • The attraction between particles of different substances. (water attracted to a paper towel)

  6. Solution: • A mixture in which ions or molecules of one or more substances are evenly distributed in another substance. • Water dissolves many ionic and polar substances but does not dissolve nonpolar substances. • Sometimes, water molecules break apart to form ions.

  7. What acid does your stomach use to digest food? • HCl • What base is used to unclog drains? • NaOH • pH: • A measure of how acidic or basic a solution is. • Pure water has a pH of: • 7 Lemon: Acidic Milk: Acidic/Neutral Hand Soap: Basic Vinegar: Acidic

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