Chapter 9: Enthalpy Flashcards
1
Q
What is the conservation of energy?
A
It states that energy cannot be created or destroyed
2
Q
Where is heat transferred to and from what?
A
Heat is transferred between the system to the surroundings
The system is the reactants and products
The surroundings is the apparatus,the lab etc
The universe includes both
3
Q
Exothermic reaction
A
Energy transferred from system to surroundings
Temperature rises
🔼h is negative
4
Q
Endothermic reaction
A
Energy transferred from surroundings to system
Temperature falls
🔼h is positive
5
Q
What is activation energy?
A
The minimum energy required for a reaction to take place
6
Q
What is enthalpy?
A
It is a measure of the heat energy in a chemical system
