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Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
Chapter 6 3
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Chapter 6 3

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Transcript

  • 1. Water and Solutions
  • 2. Polar Molecules- molecules that have an unequal distribution of charges. Ex: Water The oxygen end is slightly negative while the hydrogen end is slightly positive. Hydrogen bond- weak interaction between hydrogen atom and a fluorine, oxygen or nitrogen atom. It is a type of van der Waals force.
  • 3. Mixture
    • Mixture - material that is made up of 2 or more substances that can be separated physically.
  • 4. Heterogeneous Mixtures
    • Heterogeneous Mixture- mixture that is unevenly mixed.
    • You can see the stuff in the mixture.
  • 5. Heterogeneous Mixture Ex:
  • 6. Homogeneous Mixture
    • Homogeneous Mixture- mixture that is evenly (uniformly) mixed.
    • Homogeneous Mixtures are also called solutions .
  • 7. Homogeneous Mixture Ex:
  • 8.
    • Acid- a substance that produces hydrogen ions (H + ) in a water solution.
    • Taste sour
    • Corrosive
  • 9.
    • Litmus paper in acids will turn/stay red.
    • When an acid dissolves in water, H + ions interact with water molecules to form hydronium ions H 3 0 +
  • 10.
    • Base - a substance that forms hydroxide ions (OH - ) in water.
    • Opposite of acids.
    • Solids
    • Feel slippery
    • Bitter
  • 11.
    • Litmus paper in bases will turn/stay blue.
  • 12.
    • pH- the measurement of the concentration of H + ions in it.
    • It measures how acidic or basic a solution is.
  • 13. Acid = pH 0-7 Neutral = 7 Base = 7-14
  • 14.
    • Buffer - a solution containing ions to minimize the effects on pH.

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