Hand-in a paper with one of these explained: Use the KMT to explain why a.A balloon placed in the freezer would shrink b.A balloon in the microwave would pop.

Changes in State Phase Changes

Explain the process of melting, freezing, sublimation, and deposition in terms of KMT. Use the KMT to explain the processes of evaporation and condensation. Include: exothermic, endothermic Additional KEY Terms Characteristic PropertyVapour

Melting or Fusion  Solid is heated (energy absorbed - endothermic).  Energy is utilized to reduce IMFs.  Particles move more freely - liquid.  Characteristic Property (melting point)  unique to each substance. (s) (l)

(l) (g) There are two types of vaporization: evaporation and boiling Vaporization  Energy absorbed (endothermic) further break IMFs  Particle motion increases - gases form  Characteristic Property (boiling point)

2. Evaporation: liquid particles on the surface have enough energy to overcome IMFs - vapour released. 1. Boiling - liquid particles at the bottom given enough energy to overcome IMFs - vapour released.

Particles on the surface have fewer IMFs than other particles.

 Kinetic energy of the particles decrease as it cools.  Particles slow down, IMFs take hold.  Energy released (exothermic) to surroundings. (g) (l) Condensation

(l) (s)  Particles continue to lose energy (exothermic).  Particle motion decreases further.  IMFs increase and hold stronger.  Particles arrange into unique solid pattern.  Crystalline or amorphous Freezing or Solidification

Sublimation Deposition (s) (g) (g) (s)

decrease particle motion increase Kinetic Energy increase IMFs decrease IMFs decrease Kinetic Energy increase particle motion

CAN YOU / HAVE YOU? Explain the process of melting, freezing, sublimation, and deposition in terms of KMT. Use the KMT to explain the processes of evaporation and condensation. Include: exothermic, endothermic Additional KEY Terms Characteristic PropertyVapour