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6.3 6.4 Acids & Bases
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6.3 6.4 Acids & Bases

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  • 1. 6.3 – 6.4 Acids & Bases Pages 199 - 212
  • 2. Goal 1 Compare and contrast the characteristics of acids and bases
  • 3.
    • Acids
    • 1. Taste sour
  • 4.  
  • 5.  
  • 6. Kool-aid pickles!!
  • 7.  
  • 8.
    • 2. Donates Hydrogen ions H +
    • 3. Forms Hydronium ions H 3 O +
    • Products of a chemical reaction will show H 3 O
  • 9.
    • Products of a chemical reaction will show H 3 O
    • HCl + H 2 O  H 3 O + + Cl -
  • 10.
    • 4. Turns Blue litmus paper
    • to RED
  • 11.
    • 5. It Burns skin and tissue
  • 12.
    • 6. Conducts electricity
  • 13.
    • Want to see something cool?
    • Copy this link to your browser
    • http://pickle.xr.ca/
  • 14.
    • 7. Crystalline Solid
  • 15.
    • Examples
    Battery acid Stomach acid
  • 16.
    • Bases
    • 1. Tastes Bitter
  • 17.
    • 2. Hydroxide ions OH -
    KOH  K + + OH - NH 3 + H 2 O  NH 4 + + OH -
  • 18.
    • 3. Turns Red litmus paper
    • to BLUE
  • 19.
    • 4. Corrosive (feels slippery)
  • 20.
    • 5. Can also conduct electricity
  • 21.
    • Examples
    • Sodium hydroxide pellets
  • 22. Goal 2 Relate the pH value to the concentration and strength of a dissolved acid or base
  • 23.
    • pH measures hydronium ions (H 3 O + )
  • 24.
    • Comparative concentrations
    A lot A little 14 = = 7 A little A lot 0 Hydroxide ions (base) Hydronium ions (acid)
  • 25.
    • Concentration changes by powers of 10
    • pH =1 has 10x more than pH = 2
    • pH = 1 has 100x more than pH = 3
    • More  Less
    • 1 2 3 4 5 6 7 8 9 10 11 12 13 14
  • 26. Goal 3 Identify the products of neutralization reactions
  • 27.
    • Acid + Base  water
    • H 3 O + + OH -  H 2 O
  • 28.
    • Acid + Base  water + salt
    • H 3 O + + Cl - + Na + + OH -  2 H 2 O + Na + + Cl -
  • 29.
    • H 3 O + + Cl - + Al + + OH -  ___ + ___ + __
  • 30.
    • H 3 O + + Cl - + Na + + OH -  2 H 2 O + Al + + Cl -
  • 31.
    • KOH + HNO 3  ___+ ___+___
  • 32.
    • KOH + HNO 3  H 2 O + K + + NO 3 -
    • Is it balanced?
  • 33.
    • Must have = amounts of
    • hydronium and hydroxide ions
    • to completely neutralize
  • 34. Goal 4 Explain how common acidic and basic household substances work
  • 35.
    • Soap = basic
    • surrounds oily substances
    • allows emulsion in water
    • Whisked away!
  • 36.
    • Detergents = basic
    • lather in hard water
    • do not form soap scum
  • 37.
    • Ammonia = basic
    • emulsifies oil
    • whisked away!
  • 38.
    • Bleach = basic
    • Disinfectant
    • kill bacteria & viruses
  • 39.
    • Thanks to the following people who have generously shared their images on the creative commons of Flickr:
    • Progoddess…I love lemon & peppermint
    • Frotzed2… gave your kid a lemon 
    • Bunchofpants… pickle on a fork
    • Brad Lauster… Big Papa
    • G.J. Charlet III… hey kool-aid!
    • Interplast… acid burn
    • Duchamp… electric pickle
    • Deanj… Old ray-o-vacs
    • Wallyg… Homer!!
    • Jemsweb… walnut
    • Greg McElhatton… unsweetened chocolate
    • Santoslilhelper… slippery when wet
  • 40.
    • Thanks to the following people who have generously shared their images on the creative commons of Wikipedia:
    • Walkerma… sodium hydroxide pellets