Changes of State
What are the 3 states of matter?
Solid, liquid, gas
What is a model?
An idea that explains observations and helps make predictions.
What are the 2 critical points of changes of states of matter of any substance?
Melting point
Boiling pointWhat types of energy changes occur in evaporation, condensation and sublimation?
Evaporation : endothermic
Sublimation : endothermic
Condensation : exothermic
What is condensation? How can this be explained with the particle model?
Condensation is the change of state from gas to liquid. The change of energy goes from substance to the surroundings which makes the particles move slowly and get closer.
What is sublimation? And how can we explain it with the particle model?
Sublimation is the change of state from a solid to a gas. And can be represented with the particle model when energy is transferred from the surroundings to the solid so that its particles can escape and form a gas vapor.