a) an insulated device used for measuring the amount of heat absorbed or released
during a chemical or physical process
b) the known mass to a substance used in a reaction
c) a combination of hte specific heat and the temperature of a substance
d) the study of heat changes that accompany chemical reactions and phase changes
2. When a heated metal is placed in water, the metal and the water ______?
a) have the same temperature
b) have different temperatures
c) mix together
d) separate and expand
3. Thermochemistry is the study of heat changes that accompany chemical reactions
and phase changes.
True
False
4. The universe = ______ + _______ ?
a) enthalpy + surroundings
b) specific heat + enthalpy
c) system + specific heat
d) system + surroundings
5. An exothermic reaction is a reaction in which _____?
a) energy is released
b) energy is absorbed
c) no energy is released or absorbed
d) nothing happens
6. Enthalpy is represented as ____ ?
a) p
b) m
c) H
d) T
7. In an expthermic reaction, enthalpy changes are always _____?
a) positive
b) negative
c) large
d) small
8. The heat-pack reaction is an example of _______?
a) an endothermic reaction
b) an exothermic reaction
c) a calorimeter
d) specific heat
9. Enthalpy heat of reaction is the change in enthalpy for a reaction.
True
False
10. The system is ____?
a) the specific part of the universe that contains the reaction or process you wish to
study
b) everything in the universe
c) the study of heat changes
d) a device used in an experiment