Transcript Electrolysis: using electricity to break up a compound into its elements

Vocabulary
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1. Chemical Reaction
2. Product
3. Reactant
Electricity
To break
Electrolysis: using electricity to
break up a compound into its elements
Direct
Current
(DC)
Water
H2O
(DC current)
(DC)
Hydrogen gas + Oxygen gas
H2
+
(needs to be balanced)
O2
.
2H2O
(DC)
2 H2
+
O2
Balance: Reactants Products
4–H
4–H
2–O
2–O
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O  element/atom oxygen
O2  1 molecule of oxygen gas
H  element/atom
H2  1 molecule of hydrogen gas
H2O  1 molecule of water
.
Electrolysis of Water
Oxygen
Hydrogen
How can we test the gases
collected?
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Hydrogen Gas – “Pop test”
Oxygen Gas – “Re-ignition test”
How does a battery work?
Natural Forms of Energy
A.
B.
C.
D.
UV radiation
Lightning
Radioactive rocks
Volcanoes