The object transferring thermal energy will _________ energy and become cooler while the object gaining thermal energy will _________ energy and become warmer. A spoon in a cup of hot coffee The ________ transfers thermal energy to the ______,
The object transferring thermal energy will _________ energy and become cooler while the object gaining thermal energy will _________ energy and become warmer. A spoon in a cup of hot coffee The ________ transfers thermal energy to the ______,
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter5: Gases
Section: Chapter Questions
Problem 79QAP
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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
The object transferring thermal energy will _________ energy and become cooler while the object gaining thermal energy will _________ energy and become warmer.
A spoon in a cup of hot coffee
- The ________ transfers thermal energy to the ______, making the _______ warmer
A cup of hot soup in a room
- The _______ transfers energy to the ______, so the ______ becomes cooler
An ice cube in your hand
- Your ________ transfers thermal energy to the ________, so it gains energy (and will start to melt). You feel cold because you are LOSING thermal energy.
How is the motion of the particles of water at 80 ⁰C different from the motion of the particles of water when it is 30 ⁰C?
Transcribed Image Text:12:29 PM Fri Mar 12
* A 77%
Harmony Theodore - Particle Motion and Energy
5 ¿ + A ..
B I U § A
Particle Motion and Energy
Use the notes to answer the following questions in a different color/font
Define the following terms:
Kinetic Energy:energy due to movement
Temperature:the measure of the average kinetic energy of the particles
of a substance
Heat:the movement of thermal energy from a warmer substance to a
cooler substance
• Equilibrium:when both objects reach the same temperature
What happens to the temperature of a substance when the particles move
faster? Thermal energy is gained when a surface is heated. As a result, the
temperature increases and the particles move faster. As a material cools,
thermal energy is lost, allowing particles to move more slowly and the
temperature to drop.
What happens to the temperature of a substance when the particles move
slower? The kinetic energy of a substance's molecules can be determined by
its temperature. The higher the kinetic energy and the higher the temperature,
the faster the molecules of a material travel. The lower the kinetic energy and
the lower the temperature, the slower the molecules travel.
Objects/substances with more particles will have more thermal energy
If a beaker of water and a swimming pool have the same temperature,
which would have more thermal energy? Why? beaker because beaker
C Has the highest temperature and as much water as any other
beaker, it has the most thermal energy.
The object transferring thermal energy will
cooler while the object gaining thermal energy will
become warmer.
energy and become
energy and
A spoon in a cup of hot coffee
The
trencfore thornmelonorav to the
meking the
And
Than
In
!!!
Transcribed Image Text:12:29 PM Fri Mar 12
* A 77%
Harmony Theodore - Particle Motion and Energy
5 è + A ..
B
I U
temperature to drop.
What happens to the temperature of a substance when the particles move
slower? The kinetic energy of a substance's molecules can be determined by
its temperature. The higher the kinetic energy and the higher the temperature,
the faster the molecules of a material travel. The lower the kinetic energy and
the lower the temperature, the slower the molecules travel.
Objects/substances with more particles will have more thermal energy
If a beaker of water and a swimming pool have the same temperature,
which would have more thermal energy? Why? beaker because beaker
C Has the highest temperature and as much water as any other
beaker, it has the most thermal energy.
The object transferring thermal energy will
cooler while the object gaining thermal energy will
become warmer.
energy and become
energy and
A spoon in a cup of hot coffee
• The
transfers thermal energy to the
making the
warmer
A cup of hot soup in a room
• The
cooler
transfers energy to the
so the
becomes
An ice cube in your hand
• Your
energy (and will start to melt). You feel cold because you are LÕSING
thermal energy.
transfers thermal energy to the
so it gains
How is the motion of the particles of water at 80 °C different from the motion of
the particles of water when it is 30 °C?
And
Than
In
!!
!!!
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