Flashcards in Topic 5 Deck (11):
What is an exothermic reaction?
An exothermic reaction is one which transfers energy to the surroundings. Shown by a rise in temperature.
What is an example of an exothermic reaction?
What is an endothermic reaction?
An endothermic reaction is one which takes in energy from the surroundings. Shown with a decrease in temperature.
What is an example of an endothermic reaction?
Thermal decommission(Cold Pack)
Is bond breaking endothermic or exothermic?
Is bond forming endothermic or exothermic?
What effects voltage in electrolysis?
Type of electrodes
Difference in reactivity
Why do non-rechargeable batteries stop producing electricity?
As all of the reaction has taken place, and that the reaction can’t be reversed.
How does a fuel cell create energy?
They are supplied with fuel and oxygen that are reacted to create energy.
What are the advantages of a hydrogen fuel cell?
Don’t produce many pollutants
Can be recharged