Thermochemistry Flashcards
What is thermochemistry
Changes in state and energy in chemical reactants. Motion changes
What’s collusion theory?
Bonds are broken and created. This only happens with enough energy.
Reactants, activated complex, and products
Collide, transform into a cluster of atoms and final products
def of system
A specific location of reactions.
Def of surroundings.
Everything else but the system. The things surrounding it.
Heat flows
Due to temp change, heat is introduced. Happens through radiation or collision. Flows from warmer to colder
Heat flows from and to what?
Warmer to colder
How does heat go through?
Radiation or collision
What’s the total energy in a system called?
Internal energy
What would be the system, surroundings, and energy flow in a lemonade pitcher?
System: lemon pitcher
Surroundings: outside of pitcher
Energy flows: down and expands inside
What are the surroundings and systems of a tube filled with liquid?
Surroundings: outside the tube
System: the tube
What are the system, surroundings, and energy flow in a beaker on top of a scale?
System: beaker
Surroundings: scale
Energy flow: energy moves from surroundings into system.
