C2.5 Flashcards
What do chemical reactions involve
Energy transfers and mainly the release of energy
What needs to happen in order for other chemical reactions to occur
Energy must be supplied
What do exothermic reactions do and examples
Transfers energy to the surrounding
E.g combustion, neutralisation and many oxidisation reactions
What are everyday uses of exothermic reactions
Self- heating cans and hand warmer
What do
Endothermic reactions do and examples
Takes energy in from surroundings
E.g thermal decomposition
Everyday uses of endothermic reactions
Sport injury packs
In a reversible reaction what does the direction show
Whether it is endothermic or exothermic
Example of reversible reaction
Hydrated copper sulfate🤝anhydrous copper sulphate + water
Which side of a reversible reaction is exothermic
Towards the reactant
Which side of a reversible reaction is endothermic
Towards the product
How can u tell a reaction is exothermic
Rise in temperature
How can u tell a reaction is endothermic
By a fall in temperature
What is equal in a reversible reaction
The energy absorbed by endothermic and the energy released during exothermic
What does anhydrous mean
Without water
