1kJ 1/Hfusion g/mol ml/g liquid
No. It loses thermal energy.
A frozen pipe is a physical change, as it is just water changing state from liquid to solid (ice). However, a rusted metal bike is a chemical reaction as it is caused by the metal reacting with the oxygen in the air, in what is called an oxidation reaction.
frozen mix is the solute The water/ice is the solvent.
The cold allows it to bond in a way that is solid, because the molecules don't have enough energy to flow freely.
heavier when frozen
No. It loses thermal energy.
Frozen Lake
"Kinetic energy" is energy related to movement. If there is no movement, there is no kinetic energy.
No, if a puddle of water is frozen particles in the ice do not have kinetic energy because the water is frozen.
the particles move slow
The particles in the frozen lemonade concentrate will be moving, but it will be more of a vibration. The movement of stirring the substance creates friction, which in turn produces heat energy. The heat energy speeds up the particles causing them to move fast and more freely. They are now able to move and slide around each other, opposed to remaining in one relative location.
No. Time (and energy) are consumed just thawing it.
No, liquid particles lose energy when frozen, everything loses energy when frozen and their molecular movement slows down. Their is a state called 0 degrees Kelvin which is the lowest temperature possible. At 0 degrees Kelvin all molecular motion is stopped and all energy is lost. Liquids would gain energy when heated.
No heat (energy) is required to freeze water (from liquid to solid). Freezing RELEASES energy (heat), as it is an exothermic event. If you want to know how much energy is release, you need to know the heat of fusion for water, and then multiply that by the mass of water being frozen.
Frozen, the colder the drink the more energy is lost in the reaction of CO2 and oxygen, so the fizz decreases
A device that prepares food by quickly chilling it on a very cold surface. It produces food that is frozen on the outside but not on the inside.
A device that prepares food by quickly chilling it on a very cold surface. It produces food that is frozen on the outside but not on the inside.