Types Of Changes
Melting
Freezing
Evaporation
Condensation
Sublimation
Deposition
Ionization And Deionization
Melting
Melting is the transition of a solid into a liquid
Melting occurs when the particles of solid, that are stiff and together by molecular force, the force breaks down and the particles start moving due to its high temperature
Freezing
Freezing occurs when liquid transforms to solid
Energy is released making it have less kinetic energy
Molecules lose energy, slow down, and form structured patterns.
Evaporation
Evaporation occurs when water changes to gas
Surface molecules gain enough energy to break free from the liquid.
Condensation
Condensation occurs when gas turns into liquid form
Molecules lose energy, slow down, and stick together.
Sublimation
Solid turns into gaseous form, this change is called sublimation
Particles gain enough energy to skip the liquid phase entirely.
Deposition
When gas turns into solid form, the change is called deposition
Gas loses energy so rapidly that it forms a solid directly.
Ionization
when sufficient energy, such as heat or electrical fields, is applied to the gas.
Gas gains ton of energy becoming plasma
Deionization
When plasma loses energy and becomes gas
Energy & Phase Transitions Why does adding heat to a solid cause it to melt, but adding heat to a gas doesn’t necessarily make it a plasma?
Supercooling & Superheating Can a liquid remain in a liquid state below its freezing point or above its boiling point? What conditions allow this to happen?
Sublimation & Deposition Why do some substances, like dry ice, skip the liquid phase and go directly from solid to gas?
Pressure & Boiling Point How does atmospheric pressure affect the boiling point of water, and why does water boil at a lower temperature at high altitudes?
Phase Changes in Space How would water behave if exposed to the vacuum of space—would it freeze or boil instantly?