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Use this for questions related to the solid phase of Water ($\mathrm{H_2O}$).

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Would bobsleds go faster if the tracks were coated in butter?

Bobsleds go faster the harder (and cooler) the ice beneath it is. That is, the more slippery the surface, the higher the speed the bobsled can attain. … And ice is slippery because there is a thin layer of water on it (the surface of the bobsled must also be very smooth). So what would happen if we used butter instead of ice? …
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Why is the air inside an igloo warmer than its outside?

Solid ice on the other hand, is not a good insulator compared to compressed snow. This is because ice is actually solid but snow is filled with minute pockets of air. … You can see an example of this when you touch an ice cube and seeing it melt right where you fingertip is. …
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I'm really confused on the formula $Q=mL$ on phase change

In the equation $Q=mL$, note that $L$ is the latent heat of fusion, or the energy required to change the state of a solid (in this case, ice) to a liquid (water). … Here, 0.8 kg of ice has changed phase to water. So it makes sense that the mass of the ice appears in the equation. …
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