Chemistry Chapter 15

Definition of energy: the capacity to do work or produce heat.

• False

• True

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What is heat?

• A form of energy that flows from a warmer object to a cooler object.

• A form of energy that flows from a cooler object to a warmer object.

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True or False: Thermochemistry is Heat that is accompanied within chemical reactions and phase changes

• True

• False

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The energy stored in a substance because if it’s composition

• Physical potential energy

• Physical kinetic energy

• Chemical potential energy

• Chemical kinetic energy

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A chemical reaction or processs in which a greater amount of energy is required to break the existing bonds in the reactants and is released when the new bonds form in the product molecules

• Endothermic reaction

• Exothermic reaction

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Amounf of heat requires to raise the temperature of one gram of pure water by one degree Celsius;

• calorie

• Joule

• Kilojoules

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What is the Law of conversation of Energy?

• the total energy of an isolated system that remains constant; it is said to be conserved over time.

• the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions.

• a ratio of whole integers.

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Specific heat is the amount of heat required to raise the temperature of one gram of a given substance

• True

• False

What is the Exothermic Process?

• a process or reaction that releases energy from the system to its surroundings, usually in the form of heat.

• a monkey and a light bulb

• the quality of being hot; high temperature.

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The science associated with determining the changes in energy of system by measuring the heat exchanged with the surroundings:

• Stoichiometry

• Calorimetry

• Thermochemistry

• Enthalpy

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