Chapter 3 Thermodynamics

Celcius scale is based on what?

Kelvin scale is based on what?

Kelvin equals

degrees Celcius + 273

Farenheit formula =

1.8℃+ 32

Celcius formula = 

(°F  -  32)/1.8

Potential energy is

stored energy

Kinetic energy is

moving energy

KE  =  ½ m v²
(m = mass, v = velocity)

A calorie is

The specific heat of water (certain quantity of energy measured by weight)

1 cal/1g H₂0 1 degree C = energy/g x (C) change in temp

Heat capacity vs specific heat

(see image)

Formula for energy trnsfer

T is equivelent to kinetic energy = ½ mv²

To find energy

1 cal/g x /degree c

To find weight/change in temp

g x degree C/1 cal

1 C (big C calories) is equal to

1000 (little c calories)

conversion for 1 calorie to joules

1c = 4.184 Joules

Conversion from kilowatt hours to joules is

1 KwH = 3.60 x 10⁶ J

∆H^{0 means}

net energy change

≠ means

transition state

Kinetics talk about

the Rate of the reaction (how fast to make it go)

Know exo and endo in terms of heat transfer

The smaller the activation rate the

faster the reaction (small=fast, large=slow)

catalysts raise or lower the transition state?

they lower the transition rate (make it faster)

when something gets colder, it

gives off energy

When something gets hotter, it

absorbs energy

When something gets cooler, it

loses energy