12 Terms

Question 1

Thermal Equilibrium

Answer 1

Condition where 2 systems have same temp and no net heat flows from 1 system to the other

Question 2

Heat of reaction

Answer 2

Change of enthalpy of a chem process and calculates amount of energy per mole released

Question 3

Condesation

Answer 3

Phase change from a gas to a liquid, substance and it’s gas phase condense below its boiling point

Question 4

Kinetic energy

Answer 4

Energy of motion

Question 5

Specific heat

Answer 5

Amount of energy it takes to raise the temp of 1 gram of a substance by 1 degree kelvin

Question 6

Vaporization

Answer 6

Happens to an element/compound and it is a transition phase to vapor (evaporating and boiling)

Question 7

Endothermic reaction

Answer 7

Chemical reaction that requires an input of energy to go from reactants to products/they absorb energy

Question 8

Exothermic reaction

Answer 8

Chemical reaction that releases energy going from reactants to products/negative enthalpy/releases energy

Question 9

Joule

Answer 9

Fundamental SI unit of energy (heat)

Question 10

Calorie

Answer 10

Older unit of heat/1 calorie = 4.184 Joules

Question 11

Kilo calorie

Answer 11

Unit of energy for 1000 calories (1 kilocal = 1 large cal)

Question 12

Sublimation

Answer 12

Chemical process where solid turns into a gas w/o going through a liquid stage

Question 13

Absolute zero

Answer 13

Temp where molecular motion ceases

Question 14

Law of conservation of energy

Answer 14

Energy can never be created or destroyed, just converted from one form to the next

Question 15

Temperature

Answer 15

Measure of average kinetic energy of atoms or molecules, units of degrees F, C, or K