Vocab
Vocab
Endo vs Exo
Graphs
100
What is the total energy content of a system called?
Enthalpy
100
The state of matter change from a gas to a liquid is called
Condensing
100
What is a physical or chemical change in which a system absorbs energy from its surroundings
Endothermic reaction
100
Draw the part of the graph that shows the activation energy
curve
200
When a substance is going from a liquid to a gas it is called
boiling
200
caloric content is
the energy that food has.
200
What is an exothermic reaction?
a physical or chemical change in which energy is released by a system to its surroundings
200
B
300
Define heat of combustion
the energy released as heat by the complete combustion of one mole of a substance
300
Define heat of solution
the amount of heat energy absorbed or released when a specific amount of solute dissolves in a solvent
300
Which type or reaction has products with more energy than the reactants?
endothermic
300
B
400
What are the differences between warming and coolling
cooling is heat leaving a system, warming is heat entering a system
400
Describe the differences between latent and sensible heat
latent-heat that doesn't raise the temperature of the object. only happens during a phase change
sensible-temperature rises, doesn't happen during a phase change.
400
Which reaction has a higher activation energy?
endothermic?
400
Where would the sensible heat be in this picture?
C-D, a-b, e-f
500
describe the difference between heat and temperature
temperature is the measure of kinetic energy in the molecules
heat is the kinetic energy in the molecules
500
Describe how the enthalpy change and the heat of reaction are related based on their definitions.
the heat of reaction shows how much the kinetic energy of the atoms has changed throughout the reaction and the enthalpy change tells you the total change in energy throughout the reaction. This is the same number.
500
How does the activation energy relate to the stability of the products. Describe which graph has more stable products.
exothermic
500
Describe what part of the graph would be the latent heat and why
b-c phase change, d-e phase change