Thermochemitry

Question 1

Temperature

Answer 1

the average kinetic energy of the particles of a substance.

Question 2

Bond energy:

Answer 2

the amount of energy required to break a bond in one mole of the
molecules in which the bond is formed, measured in kJ.mol-1

Question 3

Heat of Reaction

Answer 3

the net change of chemical potential energy of a system
during a chemical reaction, measured in kJ.mol-1

Question 4

Exothermic Reaction:

Answer 4

a chemical reaction that transfers chemical potential energy into
thermal energy

Question 5

Endothermic Reaction:

Answer 5

a chemical reaction that transfers thermal energy into chemical
potential energy

Question 6

Activated Complex:

Answer 6

a high energy, unstable, temporary transition state between the
reactants and the products

Question 7

Activation Energy:

Answer 7

the minimum energy required to start a chemical reaction

Question 8

Catalyst:

Answer 8

a substance that increases the rate of reaction but remains unchanged at the end of the reaction