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Physical Science Notes 416-436
Conductivity Lab
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What conducts and what doesn't?

What was done:
 

Two electrodes were suspended from a light-bulb that was attached to a 120V power source in the laboratory. Each liquid and solid had the two electrodes placed inside them.

 

What could/should be observed:

 

If the compound conducts electricity the light-bulb would light up. If it was a very good conductor then it would be really bright (shown on table below by the ++1) if the compound was a good conductor or a poor conductor the bulb would faintly light up (shown on table below by the +1). If it doesnt conduct then the light-bulb did not light up at all (shown on table below by the )

Chemical name

Chemical formula

Conducts (how well)

Sodium chloride (s)

NaCl

Sodium chloride (aq)

NaCl

++1

Hydrochloric acid (aq)

HCl

++1

Sodium hydroxide (aq)

NaOH

+1

Glacial acetic acid (l)

CH3COOH

Potassium hydroxide (aq)

KOH

++1

Distilled water (l)

H2O

Ammonium hydroxide (aq)

NH4OH

++1

Sulfuric acid (aq)

H2SO4

++1

Nitric acid (aq)

HNO3

++1

Ethanol (l)

CH3CH2OH

Acetic acid (aq)

CH3COOH

+1

Methanol (l)

CH3OH

Sugar (aq)

C12H22O11

Tap water (l)

 

H2O

++1

Copper sulfate (aq)

 

CuSO4

++1

Calcium hydroxide (aq)

 

Ca(OH)2

++1

compoundsused.jpg
Compounds used in experiment

light-bulb.jpg
Light-bulb lights up wih KOH

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