nolza
1 Answer
pythonlover
Solids and liquids expand. Objects expand when heated because the heat 'gives' molecules more energy, so they move around more. This vibration, as molecules are pushed further apart, is manifested as a larger volume.An exception is water, which contracts as it cools until you reach about 3.98 ° C then starts to expand as it cools more. This is caused by the shape of water molecules.
Then again, there is Zirconium Tungstate which contracts as it is heated up to 800o C (an effect caused by lattice formation that twists and turns individual molecules).
http://wiki.answers.com/Q/Why_do_solids_and_liquids_expand_when_heated
| 10 years ago. Rating: 1 | |
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