Question

match the term with the correct definition below:
a system that can exchange
both matter and energy
with the surroundings
the amount of energy
needed to increase the
temperature of one gram of
a substance by one degree
celsius
the study of the energy
changes involved in
chemical and physical
processes
describes the process
during which heat enters a
system
a system that can exchange
only energy with the
surroundings
a measure of the average
kinetic energy of all the
particles of a sample of
matter
a system that cannot
exchange either energy or
matter with the
surroundings
describes the process
during which heat leaves a
system

1. thermochemistry
2. endothermic
3. specific heat capacity
4. closed system
5. exothermic
6. open system
7. temperature
8. isolated system

Explanation:

• For the first definition "a system that can exchange both matter and energy with the surroundings", an open - system (6) is the one that can exchange both matter and energy with the surroundings.
• For the second definition "the amount of energy needed to increase the temperature of one gram of a substance by one degree Celsius", specific heat capacity (3) is defined as the amount of energy required to raise the temperature of 1 gram of a substance by 1°C.
• For the third definition "the study of the energy changes involved in chemical and physical processes", thermochemistry (1) is the branch of chemistry that deals with energy changes in chemical and physical processes.
• For the fourth definition "describes the process during which heat enters a system", endothermic (2) processes are those in which heat is absorbed (heat enters the system).
• For the fifth definition "a system that can exchange only energy with the surroundings", a closed - system (4) can exchange energy but not matter with the surroundings.
• For the sixth definition "a measure of the average kinetic energy of all the particles of a sample of matter", temperature (7) is a measure of the average kinetic energy of the particles in a sample of matter.
• For the seventh definition "a system that cannot exchange either energy or matter with the surroundings", an isolated system (8) cannot exchange energy or matter with the surroundings.
• For the eighth definition "describes the process during which heat leaves a system", exothermic (5) processes are those in which heat is released (heat leaves the system).

Answer:

1. thermochemistry - the study of the energy changes involved in chemical and physical processes
2. endothermic - describes the process during which heat enters a system
3. specific heat capacity - the amount of energy needed to increase the temperature of one gram of a substance by one degree Celsius
4. closed system - a system that can exchange only energy with the surroundings
5. exothermic - describes the process during which heat leaves a system
6. open system - a system that can exchange both matter and energy with the surroundings
7. temperature - a measure of the average kinetic energy of all the particles of a sample of matter
8. isolated system - a system that cannot exchange either energy or matter with the surroundings