Module 3 Flashcards
Arrhenius definition
A acid that produces H+ ions into solution
Define neonates Lowry definition
Transfer of H+ ions into an acid -base reaction.
How to find congugate acid or base.
Interpret to have the conjugate acid donate a proton while conjugate base takes a proton . From or to a chemical formula
What ways is energy being transferred between systems and surroundings?
Work & heat
Define work
Energy used to mass a mass against force
Define Heat what’s the symbol?
q
Energy transferred from a hot object to a colder one
Can work and heat be measured in joules? No? Yes?
Yes
What’s is the first law of thermodynamics
Law of conservation. Energy is conversed.
Define internal energy what is the symbol?
E
A system of the sum of all Ek and Ep energies of all its components
Define exothermic
Giving off heat , losing energy to its surroundings
Define endothermic
Taking in heat , gaining energy from its surroundings
What are the three important quantities for thermodynamics
- Numerical value
- A unit
- Assigning endothermic or exothermic perspectives
Did you practice enthaply reactions
Blue for yes, purple for no
What sign is for exothermic?
- , gives heat
What is the sign for endothermic
+ , accept cold
What is the sign for heat capacity
CS
What is the equation for calorimeter
q=Csm∆T
What common phrases for exothermic ?
Emit heat, lose it , hot (-)
What common phrases are used for endothermic
Take in heat, gain it (+)
Define Internal energy
A sum of both kinetic and potential energy. That are composed within a system
Define state function
A quantity that’s like internal energy.
The value depends on the state of the system not how it got there
Dignify the sign for the work towards the systems
Work on system =?
Work by system = ?
Work on system = +
Work by system = -
Dignify the sign of the system towards the surroundings
Work on surroundings = ?
Work by surroundings = ?
Work on surroundings = -
Work by surroundings = +
What is the equation for work :pressure -volume work?
W = -Pext • ∆ V
Pext= atm
∆ V = L
Define wavelength
The longer from one hump to the next
Define frequency
The amount of humps counted within a time usually in Hz
