Thermochemistry Fundamentals
Explore the basic principles of thermochemistry, including endothermic and exothermic reactions, enthalpy, and temperature changes.
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Thermochemistry Fundamentals
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Read each question carefully and answer to the best of your ability.
1. Which of the following describes an exothermic reaction?
A reaction that absorbs heat from its surroundings.
A reaction that releases heat to its surroundings.
A reaction that maintains a constant temperature.
A reaction that requires light energy to proceed.
2. What is the unit for enthalpy change (ΔH)?
Joules (J)
Kelvin (K)
Grams (g)
Meters (m)
3. In an endothermic reaction, the products have higher energy than the reactants.
True
False
4. A calorimeter is used to measure the change in temperature of a system.
True
False
5. The total heat content of a system at constant pressure is called .
6. When ice melts, it is an process because it absorbs heat from its surroundings.
7. Distinguish between heat and temperature.
8. Observe the diagram of the thermometer below. If the liquid in the thermometer rises, what does this indicate about the surrounding environment's temperature?
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