Acid, Bases & Salt Video Pre Test 1. True 2. False 3. True 4. True 5. False 6. False 7. True 8. True 9. False 10. False Post Test 1. Neutraliza tion 2. Base 3. Anion 4. Electrolyt es 5. False 6. False 7. True 8. False 9. False Post Test 10. bitter, slippery, high pH 11. Acids donate hydrogen, Bases accept Hydrogen 12. An easy way to gauge is something is a strong/weak acid or base
Acid, Bases & Salt Video. Post Test Neutralization Base Anion Electrolytes False False True False False. Post Test bitter, slippery, high pH Acids donate hydrogen, Bases accept Hydrogen An easy way to gauge is something is a strong/weak acid or base. Pre Test True False True - PowerPoint PPT Presentation
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Acid, Bases & Salt VideoAcid, Bases & Salt Video
Pre Test1. True
2. False
3. True
4. True
5. False
6. False
7. True
8. True
9. False
10. False
Post Test1. Neutralization
2. Base
3. Anion
4. Electrolytes
5. False
6. False
7. True
8. False
9. False
Post Test10. bitter, slippery, high
pH
11. Acids donate hydrogen, Bases accept Hydrogen
12. An easy way to gauge is something is a strong/weak acid or base
Ch. 8Solutions, Acids, & Bases
Ch. 8Solutions, Acids, & Bases
III. Particles in Solution “Like Dissolves Like” Electrolytes
A. “Like Dissolves Like”A. “Like Dissolves Like”
Polar substances will only dissolve in polar liquids• Rubbing alcohol and water
Nonpolar substances will only dissolve in nonpolar liquids• Oil and butter
Substances that aren’t the same don’t mix.• Oil and water
A. “Like Dissolves Like”A. “Like Dissolves Like”
NONPOLAR
NONPOLAR
POLAR
POLAR
Detergents• polar “head” with long nonpolar “tail”• can dissolve both types (polar and nonpolar)
B. ElectrolyteB. Electrolyte
An electrolyte is a substance that when dissolved in water form ions
Electrolytes get their name from the fact that the conduct electricity in water. Example: salt dissolved in water
Many sports drinks contain “electrolytes” which are salts dissolved in water
B. ElectrolytesB. Electrolytes
ElectrolyteNon-
Electrolytesolute exists as
ions onlyEasily conducts electricity
- +
salt
- +
sugar
solute exists asmolecules only
Does NOT conduct electricity
- +
acetic acid
WeakElectrolyte
solute exists asions and
MoleculesSlightly conducts
electricity
B. ElectrolytesB. Electrolytes
Dissociation• separation of +/-
ions when an ionic compound dissolves in water
B. ElectrolytesB. Electrolytes
Ionization• breaking apart of
polar covalent molecules into ions when dissolving in water
Ch. 8Solutions, Acids, & Bases
Ch. 8Solutions, Acids, & Bases
IV. Intro to Acids & Bases
Definitions Properties Uses
A. AcidsA. Acids
• Acids contain at least one hydrogen atom that can be removed when the acid is dissolved in water.
• These form hydronium ions, H3O+.• Also called a proton donor
HCl + H2O H3O+ + Cl–
A. BasesA. Bases
• Bases form hydroxide ions (OH-) in a water solution.
• a proton acceptor
NH3 + H2O NH4+ + OH-
A. IndicatorsA. Indicators
• Indicators are an organic substance that changes color in an acid or base.
Examples:• litmus - red/blue• phenolphthalein - colorless/pink• goldenrod - yellow/red• red cabbage juice - pink/green
B. PropertiesB. Properties
sour tastepH less than 7corrosiveelectrolytes turn litmus red react with metals to
form H2 gas
bitter tastepH greater than 7corrosiveelectrolytes turn litmus blueslippery feel