Chemistry- C5 Part B

1. Different metals reacting with the same ... cause a voltage (11)
4. Hydrogen-oxygen fuel cell combines hydrogen and oxygen to produce ... and energy (5, 5)
5. In a hydrogen-oxygen fuel cell, oxygen goes into the cathode compartment and ... electrons (reduction), reacts with the hydrogen ions and makes water (5)
8. When fuel enters the fuel cell, it becomes ... (8)

2. This is an electrical cell supplied with fuel and oxygen and uses energy to produce electricity efficiently (4, 4)
3. In a hydrogen-oxygen fuel cell, hydrogen goes into the anode ompartment and ... electrons (oxidation) and produces hydrogen ions. These ions move to the cathode (5)
6. Hydrogen- oxygen fuel cells involve a ... reaction (5)
7. Electrolyte used will also affect the ... (7)
9. In non- ... batteries, the reactants get used up (11)
10. Voltages of multiple cells are ... so there is a bigger voltage (8)

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