

Unit 3 test: Thermochemistry Honors Form B
Flashcard
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the formula to calculate the amount of energy absorbed or released during a temperature change?
Back
q = m * c * ΔT, where q is the heat energy (in Joules), m is the mass (in grams), c is the specific heat capacity (in J/g°C), and ΔT is the change in temperature (in °C).
2.
FLASHCARD QUESTION
Front
Define specific heat capacity.
Back
Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1°C.
3.
FLASHCARD QUESTION
Front
What is the difference between an endothermic and exothermic process?
Back
An endothermic process absorbs heat from the surroundings, while an exothermic process releases heat to the surroundings.
4.
FLASHCARD QUESTION
Front
What happens to the temperature of a substance during a phase change?
Back
The temperature remains constant during a phase change, even though heat is being added or removed.
5.
FLASHCARD QUESTION
Front
How does heat flow between two objects?
Back
Heat flows from an object at a higher temperature to an object at a lower temperature until thermal equilibrium is reached.
6.
FLASHCARD QUESTION
Front
What is the significance of the average kinetic energy in relation to temperature?
Back
Temperature is a measure of the average kinetic energy of the particles in a substance.
7.
FLASHCARD QUESTION
Front
What is sublimation?
Back
Sublimation is the process in which a solid changes directly into a gas without passing through the liquid phase.
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