Q: when compounds are made from the elements
A: formation

Q: fusion
A: converting a solid to a liquid

Q: calorimeter
A: a device used to measure heat of reaction

Q: the product of mass times specific heat times temperature change
A: heat

Q: entropy
A: the tendency towards increasing disorder

Q: the fundamental principle upon which energy calculations are based
A: conservation

Q: his law relates to combining the delta H values for the steps in a reaction
A: Hess

Q: phase
A: another word for state of matter

Q: BTU
A: the english system heat unit

Q: this symbol means change
A: delta

Q: insulators
A: they are poor heat conductors

Q: heat of condensation
A: the heat released when a gas forms a liquid

Q: another word for delta H
A: enthalpy

Q: it has the highest heat capacity of almost any substance
A: water

Q: combustion
A: burning

Q: ice can be melted at temperatures lower than zero Celsius by increasing this factor
A: pressure

Q: it measures the concentration of heat in an object
A: temperature

Q: sublimation
A: when a solid forms a gas

Q: they are good heat conductors
A: metals

Q: triple point
A: when solid, liquid and gas exist in equilibrium with eachother

Q: the highest entropy state of matter
A: gas

Q: endothermic
A: these reactions require energy to occur

Q: the site of stored energy in molecules
A: chemical bonds

Q: stored energy
A: potential

Q: joule
A: the metric energy unit

Q: exothermic
A: energy releasing reactions

Q: the lowest energy state of matter
A: solid