Question

what happens when solids are heated? explain with the help of an experiment? ​

Answer 1

Objects expand when heated because the heat 'gives' molecules more energy, so they move around more....This is caused by the shape of water molecules.....Then again, there is Zirconium Tungstate which contracts as it is heated up to 800 o C (an effect caused by lattice formation that twists and turns individual molecules).