Section 7: Heat 1. When ice melts, describe what happens to the energy of the air around it. 2. Objects A & B are sitting next to each other in direct sunlight. Object B gets much hotter than object A. Describe what you know about the specific heat of each object. and 3. The amount of heat transferred from an object depends on 4. 25 grams of water and 125 grams of water are heated. Both samples increase their temperature by 25.0°C. Describe what you know about the heat in the two samples of water. heat to areas of heat until is reached. 5. Heat always moves from areas of 6. A piece of metal is heated and then placed into a beaker of water. Describe the changes in the metal and the water with regards to heat energy, temperature, and kinetic energy of particles. Metal: Water:
Section 7: Heat 1. When ice melts, describe what happens to the energy of the air around it. 2. Objects A & B are sitting next to each other in direct sunlight. Object B gets much hotter than object A. Describe what you know about the specific heat of each object. and 3. The amount of heat transferred from an object depends on 4. 25 grams of water and 125 grams of water are heated. Both samples increase their temperature by 25.0°C. Describe what you know about the heat in the two samples of water. heat to areas of heat until is reached. 5. Heat always moves from areas of 6. A piece of metal is heated and then placed into a beaker of water. Describe the changes in the metal and the water with regards to heat energy, temperature, and kinetic energy of particles. Metal: Water:
General Chemistry - Standalone book (MindTap Course List)
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.39QP: You have two samples of different metals, metal A and metal B, each having the same mass. You heat...
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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.
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Transcribed Image Text:Section 7: Heat
1. When ice melts, describe what happens to the energy of the air around it.
2. Objects A & B are sitting next to each other in direct sunlight. Object B gets much hotter than object A.
Describe what you know about the specific heat of each object.
and
3. The amount of heat transferred from an object depends on
4. 25 grams of water and 125 grams of water are heated. Both samples increase their temperature by 25.0°C. Describe what you know about
the heat in the two samples of water.
heat to areas of
heat until
is reached.
5. Heat always moves from areas of
6. A piece of metal is heated and then placed into a beaker of water, Describe the changes in the metal and the water with regards to heat
energy, temperature, and kinetic energy of particles.
Metal:
Water:
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