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Monday 5-6-13. Fill out planner for the week Note: the quiz on Wednesday is over properties of water, types of bonds, & pH. Update Journal Warm Up- Explain how to determine if a molecule is polar or nonpolar by looking at its structure. Check Homework. Acids, Bases and pH.

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Monday 5 6 13
Monday 5-6-13

  • Fill out planner for the week

    Note: the quiz on Wednesday is over properties of water, types of bonds, & pH.

  • Update Journal

  • Warm Up- Explain how to determine if a molecule is polar or nonpolar by looking at its structure.

  • Check Homework




Ph foldable notes
pH foldable notes

Cut along dotted lines then Fold up Bottom folds

The Hydrogen ion (H+) is the basis of pH (parts Hydrogen ion) The Scale measures how acidic or basic something is.

Acids

Neutrals

Bases

The pH scale Ranges from 0 to 14

0 1 2 3 4 5

*O is a strong Acid

*5 is a weak Acid

6 7 8

*7 is a pure neutral substance

  • 10 11 12 13 14

    *9 is a weak base

    *14 is a strong base


Water acids and bases
Water, Acids and Bases

  • Water can split into two ions:

    H2O H+ + OH-

  • H+ or H3O+ is called a Hydronium Ion.

  • OH-is called hydroxide ion.


Ph foldable notes1
pH foldable notes

Fill in the following on your foldable

Acids

Neutrals

Bases

  • Release H+ ions

  • The Higher the concentration of H3O+ (Hydronium ions) =‘s lower pH

  • Low concentration of OH- ions

  • H2O  H+ + OH-

  • Pure water Has equal amounts of hydronium (H+ or H3O+) and hydroxide (OH- ) ions

  • Release OH- ions

  • Contain a High concentration of OH- (Hydroxide) ions

  • Low concentration of H3O+ ions


  • Acids

  • Strong acids have

  • a pH of 1-3

  • Produce lots of

  • H+ ions


  • Bases

  • Strong bases have a

  • pH of 11 to 14

  • Contain lots of OH-

  • ions and fewer H+ ions


Indicators top of page under title
Indicators(Top of page under title)

  • A substance that changes color in the presence of an acid or a base


Ph foldable notes2
pH foldable notes

Fill in the following on your foldable

Acids

Neutrals

Bases

  • Turn Blue litmus paper red

  • Taste Sour

  • React with metals to form hydrogen gas

    Examples:

  • Do not change color of litmus paper.

  • When a base and an acid are mixed they produce neutral H2O & salt (Neutralization)

  • Turns Red litmus paper blue

  • Tastes bitter

  • Slippery to the touch

    Examples:



Ph and biological systems
pH and Biological Systems

  • Different organisms live well in different pH’s.

  • For example, bacteria in our stomach live well in an acidic environment.


  • Enzymes, which control all the reactions in living organisms, work at different pH levels.

  • When the pH is changed this can have dramatic affect on those organisms.

  • If human blood is not between a pH of 7.35 & 7.45 it:

    • causes acidosis when it is too acidic

    • And alkalosis when it is too basic

    • Both of which can be deadly



To do
To Do: and more basic if a base is added.

  • Update SN

  • Worksheet


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