The States of Matter and Heat Capaciy (Leaving Cert Physics): Quizzes

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The States of Matter and Heat Capaciy
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How are particles arranged in a solid?

Tightly packed in organised structure

What is the key characteristic of particles in a solid?

They vibrate around fixed positions

Why are gases much easier to compress than liquids?

Large distances between particles

At what temperature do air particles at Earth's surface move at approximately 500500 m/s?

15°C15°\text{C}

What is heat capacity?

Energy to raise temp by 11 K

In the formula Q=CΔθQ = C\Delta\theta, what does CC represent?

Heat capacity in J K−1^{-1}

What is specific heat capacity?

Energy to raise 11 kg by 11 K

In Q=mcΔθQ = mc\Delta\theta, what are the units of cc?

J kg−1^{-1} K−1^{-1}

What is the specific heat capacity of water?

41804180 J kg−1^{-1} K−1^{-1}

Which substance has the lowest specific heat capacity?

Copper (390390 J kg−1^{-1} K−1^{-1})

Why do metals heat up and cool down quickly?

They have low specific heat capacity

What explains water's excellence for cooling systems?

Highest specific heat capacity

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