Chapter 5 - Energy and Change

Specific Heat Capacity

________ (C):** amount of energy needed to raise temperature of one gram of substance 1 celsius or 1 kelvin.

m2 s2

C2= 9.0 × 1016 ________ and E= mc2E is energy in kg • ________ (J) is the mass in kgc2 is the square of the speed of light*

bond

Creating a(n) ________ is a process that releases energy*

nuclear reactions

In ________, a significant amount of the mass of the reactants is actually converted into energy*

Enthalpy

________ increases as energy are absorbed in an endothermic reaction.

Higher binding energy

________ means more stable nucleus, most stable is at mass number 60.

Calorimeter

________**: measure enthalpy changes for chemical and physical reactions.

enthalpy change

Enthalpy of a solution*: the ________ when a solute dissolves in a solvent.

Thermochemistry

________: the study of energy involved in chemical reactions**

total internal energy of a

Enthalpy**,** H**: ________ substance at constant pressure.

Hesss law of heat

________ summation**: states that the enthalpy change of a physical or chemical process depends only on the beginning conditions (reactants) and the end conditions (products)

Nuclear fission

________:** A heavy nucleus undergoing split into lighter nuclei which releases energy.

bond

Breaking a(n) ________ is a process that requires energy*

Enthalpy changes

________ represent the heat change between products and reactants at a constant temperatureShould be open to atmosphere*

Enthalpy change

________ is independent of the pathway of the process and the number of intermediate steps in the process*