Why does matter alternate between potential energy and kinetic energy

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4