Unit 9 | Heat, Thermochemistry and Calorimetry Review

What is Thermochemistry?

• The study of heat changes in chemical reactions and physical changes of state.

• The study of energy in motion.

• The study of temperature changes in substances.

• The study of chemical bonds.

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Define Energy.

• The capacity to perform work or supply heat.

• The measure of temperature.

• The stored chemical potential.

• The process of heat absorption.

What is Heat (q)?

• A) A form of energy that flows between objects due to a temperature difference.

• B) The measure of kinetic energy.

• C) The energy stored in chemical bonds.

• D) The process of energy conversion.

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Temperature is a measure of the average ________ energy of the particles within a substance.

• kinetic

• potential

• thermal

• chemical

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What is Kinetic Energy?

• The energy possessed by an object due to its motion.

• The energy stored in chemical bonds.

• The energy released in exothermic processes.

• The energy absorbed in endothermic processes.

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Define Potential Energy.

• Stored energy due to position or chemical composition.

• Energy in motion.

• Energy released in chemical reactions.

• Energy absorbed from surroundings.

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Chemical Potential Energy is stored within the ________ of a substance.

• chemical bonds

• molecular structure

• atomic nucleus

• electron cloud

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What is an Exothermic Process?

• A) A process that releases heat energy into the surroundings.

• B) A process that absorbs heat energy from the surroundings.

• C) A process that stores chemical potential energy.

• D) A process that measures temperature changes.

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Define Endothermic Process.

• A process that absorbs heat energy from the surroundings.

• A process that releases heat energy into the surroundings.

• A process that converts energy into motion.

• A process that measures energy changes.

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The Law of Conservation of Energy states that energy cannot be created or ________.

• destroyed

• transferred

• converted

• lost

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