Energy
What scientific law if followed in thermo?
The law of conservation of Energy
Amount of energy required to raise 1 g 1 degree Celsius
specific heat
When enthalpy is negative, the reactants have ____ energy and the reaction is ____________
more, exothermic
To move from a solid to a liquid?
fusion
A slanted line means that ____________ is increasing?
temperature
What abilities define energy?
ability to produce heat or do work
what device is used to measure heat during a chemical process
calorimeter
When enthalpy is positive, the reactants have ____ energy and the reaction is ____________
less, endothermic
To move from a liquid to a gas?
Vaporization
A flat line indicates what?
A phase change is occuring
What form of energy have we focused on in Thermo?
heat
A systems heat at constant pressure?
Enthalpy
As you move from a solid phase to a liquid phase is the process endothermic or exothermic?
endothermic
To move from a gas to a liquid?
condensation
When heat / energy is being added but the temperature remains the same, what is increasing?
potential energy
kinetic energy
When something gives off heat?
exothermic
Enthalpy change for burning one mole of a substance?
heat of combustion
To move from a liquid to a solid?
solidification
How many phase changes occur on a standard heating curve?
2
As temperature increases, what happens to energy?
it increases
When on object or process absorbs heat?
Endothermic
Moving from gas to a solid is?
exothermic
Which of the pairs are opposite reactions?
A. Fusion and Condensation
B. Solidification and Vaporization
C. Solidification and Fusion
D. Vaporization and Fusion
C. Solidification and Fusion
At higher temperatures