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What is an electrolyte? olution_of_cmpds.swf olution_of_cmpds.swf.

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Presentation on theme: "What is an electrolyte? olution_of_cmpds.swf olution_of_cmpds.swf."— Presentation transcript:

1 What is an electrolyte? olution_of_cmpds.swf olution_of_cmpds.swf Sparky!

2 What is happening? 1/kits/conductivitysimulation3.html 1/kits/conductivitysimulation3.html Take another look at ionic solutions, what is the difference?

3 Which substances are electrolytes? Salts: – A salt is a substance produced by the chemical bonding of metal and non-metal ions. – These ions are usually not H+ or OH- (an ionic molecule) Salts: – A salt is a substance produced by the chemical bonding of metal and non-metal ions. – These ions are usually not H+ or OH- (an ionic molecule) NaCl (s)  Na+ (aq) + Cl- (aq) H2OH2O SolidIn aqueous solution

4 Which substances are electrolytes? Acids: – A substance that releases H+ ions in solution. HCl (l)  H+ (aq) + Cl- (aq) Acids: – A substance that releases H+ ions in solution. HCl (l)  H+ (aq) + Cl- (aq) H2OH2O Liquid

5 Which substances are electrolytes? Bases: – A substance that releases OH- (an ionic molecule) in solution. NaOH (s)  Na+ (aq) + OH- (aq) Bases: – A substance that releases OH- (an ionic molecule) in solution. NaOH (s)  Na+ (aq) + OH- (aq)

6 What are some exceptions that are hard to figure out: Vinegar (acetic acid): – CH 3 COOH  CH 3 COO- + H+ Ammnonia (NH 3 ) a base: – NH 3 + H 2 O  NH OH- Vinegar (acetic acid): – CH 3 COOH  CH 3 COO- + H+ Ammnonia (NH 3 ) a base: – NH 3 + H 2 O  NH OH-

7 Sugar Sugar is not an electrolyte because it does not produce ions in solution. C 12 H 22 O 11 (s)  C 12 H 22 O 11 (aq) olution_of_cmpds.swf

8 Fruit Batteries! ZGg ZGg

9 What is happening? 1/kits/conductivitysimulation3.html 1/kits/conductivitysimulation3.html Take another look at ionic solutions, what is the difference? Come up with your own explanation!

10 An electrolyte is… a substance that, when dissolved in water, allows an electric current to flow through the solution.

11 We can measure the strength of an electrolyte by… Measuring the electrical conductivity of the solution.

12 pH and the pH Scale

13

14 The following slides are not in your notes, use the back page of the package to write this information down.

15 Sugars and other covalent bonds are not electrolytes.

16 What is the difference? Strong Acid Weak Acid Complete electrolytic dissociation into ions. Only some of the molecules dissociate, while many remain intact.

17 Try some questions Questions in your package. Textbook p. 64 #


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