Thermochemistry Fundamentals
Explore the basics of thermochemistry, including endothermic and exothermic reactions, enthalpy changes, and calorimetry.
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Thermochemistry Fundamentals
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following best describes an exothermic reaction?
A reaction that absorbs heat from its surroundings.
A reaction that releases heat into its surroundings.
A reaction that has no change in temperature.
A reaction that requires a catalyst to occur.
2. What is the SI unit for energy and heat?
Calorie
Joule
Watt
Kelvin
3. The Law of Conservation of Energy states that energy cannot be created or , but can be transferred or transformed.
4. A is an apparatus used to measure the amount of heat absorbed or released during a chemical reaction or physical change.
5. An endothermic reaction feels warm to the touch because it releases heat.
True
False
6. Enthalpy (ΔH) is a measure of the heat content of a system at constant pressure.
True
False
7. Explain the difference between heat and temperature.
8. Describe how a calorimeter works to measure heat changes in a reaction. You may refer to the diagram below.
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