Heat/ Temperature/ Energyy Flashcards

0
Q

The energy in a gallon of gasoline is?

A

Chemical potential energy

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1
Q

Energy is the ability to?

A

Do work or produce heat

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2
Q

The Law of Conservation of Energy says in a chemical reaction or physical process energy can be ______ but it cannot be ______

A

Created, destroyed

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3
Q

A measure of the average kinetic energy of the particles in a sample of matter is

A

Temperature

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4
Q

The two types of potential energy are cause by the _____ of an object

A

Composition or position

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5
Q

Kinetic energy is the energy of?

A

Motion

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6
Q

Energy flowing from warmer to cooler objects is?

A

Heat

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7
Q

What is a calorie?

A

Amount of heat needed to raise the temp. Of 1 gram of 1 degree C.

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8
Q

What is a Calorie?

A

1000 calories

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9
Q

An endothermic reaction is one which?

A

Absorbs energy

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10
Q

The study of heat changes that accompany chemical reactions is known as?

A

Thermochemistry

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11
Q

The enthalpy of fusion is the amount of heat needed to?

A

Melt one mole of a solid substance

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12
Q

What is the major problem in using solar energy at this time?

A

We have not come up with an efficient and effective methods for storing energy

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13
Q

Enthalpy of combustion is the enthalpy change that occurs with?

A

Complete burning of one mole of substance

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14
Q

Which substance is used to measure heat transfer in a calorimeter?

A

Water

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15
Q

A possible chemical method of making solar energy more useful includes the use of ?

A

Hydrates

16
Q

This chemical method is based on which of the following

A

Reaction soaks up energy from the sun in day and releases it at night in a different reaction

17
Q

Conduction?

A

Heat transfer by direct contact, usually in solids such as metals

18
Q

Convection

A

Transfer of heat by the movement of the heated medium, in liquids and gases

19
Q

Radiation

A

Transfer of heat in the form of waves through space, also known as infrared radiation

20
Q

A calorimeter is a device designed to measure?

A

Amount of heat is absorbed or released