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AQA Physics GCSE: Particle model > Internal Energy > Flashcards

Internal Energy Flashcards

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1
Q

What is temperature?

A

how hot or cold something is

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2
Q

What is temperature measured in?

A

Degrees Celsius (°C)

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3
Q

What is heat energy?

A

the measure of thermal energy

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4
Q

What is heat energy measured in?

A

Jules ( J )

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5
Q

What 2 things can heat energy change?

A
  • the temperature of a substance
  • the state of a substance
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6
Q

What type of change is a change of state

A

a physical change

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7
Q

What is internal energy?

A

total kinetic and potential energy of all the particles that make up a system

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8
Q

What is kinetic energy?

A

energy due to movement

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9
Q

What is potential energy?

A

energy due to arrangement or spacing

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10
Q

What is the formula for change in thermal energy?

A

Change in thermal energy = mass x specific heat capacity x change in temperature

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11
Q

what is the unit for change in thermal energy?

A

joules (J)

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12
Q

what is the unit for specific heat capacity?

A

joules per kilogram Degrees Celsius ( J/Kg °C)

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13
Q

what is the unit for mass?

A

Kilograms (Kg)

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14
Q

What is specific heat capacity?

A

the amount of energy required to change the temperature of one kilogram of a substance by one degree Celsius

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14
Q

What is the unit for temperature change?

A

Celsius ( °C)

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14
Q

What does heat capacity depend on?

A

mass

15
Q

What does a lower specific heat capacity mean?

A

quicker to heat up a substance and quicker to cool down a substance

16
Q

what does a higher specific heat capacity mean?

A

slower to heat up a substance and slower to cool down a substance.

17
Q
A

AQA Physics GCSE: Particle model (3 decks)

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