Energy Changes Flashcards
1
Q
Why should batteries not be put in household waste
A
Metal/alkaline waste can be toxic
2
Q
2 advantages of using hydrogen fuel cells instead of using rechargeable cells to power cars
A
No toxic chemicals to dispose of at the end of the cells life
Takes less time to refuel
3
Q
Why are hydrogen fuel cell trains referred to as steam trains
A
Hydrogen is oxidised
And water is produced
4
Q
Why do alkaline batteries eventually stop working
A
Reactants are used up
5
Q
Why can alkaline batteries not be recharged
A
The reaction is not reversible
6
Q
Why are hydrogen fuel cells sometimes described as alkaline fuel cells
A
As they contain OH ions
7
Q
A
