Chemistry Final Exam Review- THERMOCHEMISTRY

Temperature is a measure of the...

• total energy in a substance
• total kinetic energy in a substance
• average potential energy in a substance
• average kinetic energy of molecules in a substance

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The transfer of thermal energy between objects of different temperatures is called...

• temperature
• heat
• internal energy
• none of these

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A substance with a high specific heat:

• Is always extremely hot.
• Requires a lot of energy to become hot.
• Is not heavy.
• Does not requires a lot of energy to become hot.

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Thermal energy always moves:

• From a high temperature object to a lower temperature object.
• From a lower temperature object to a higher temperature object.
• From an object with lower kinetic energy to an object with higher kinetic energy.
• From an object of higher mass to an object of lower mass.

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Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

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In an endothermic reaction, heat is ,,,

• taken in
• given out

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The amount of thermal energy required to raise the temperature of one (1) kilogram of a substance by 1^o C is known as:

• Specific heat
• Heat of fusion
• Heat of vaporization
• Melting point

When you place the metal in boiling water, heat flows from the _________ to the _______.

• metal to the boiling water

• bottom of the metal to the top half of the metal

• bottom of the water to the top of the water

• boiling water to the metal

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Define Exothermic

• Energy is released; ΔH is negative; Going from Gas to Liquid, Liquid to Solid

• Energy is absorbed; ΔH is positive; Going from Gas to Liquid, Liquid to Solid

• Energy is released; ΔH is positive; Going from Solid to Liquid, Liquid to Gas

• Energy is absorbed; ΔH is negative; Going from Gas to Liquid, Liquid to Solid

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Define Endothermic

• Energy is absorbed; ΔH is negative; Going from Liquid to Gas, and Gas to Liquid

• Energy is released; ΔH is negative; Going from Solid to Liquid, and Liquid to Gas

• Energy is released; ΔH is positive; Going from Solid to Liquid, and Liquid to Gas

• Energy is absorbed; ΔH is positive; Going from Solid to Liquid, and Liquid to Gas

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NGSS.MS-PS1-4

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