1 / 11

Phase Changes

Phase Changes. What did one water molecule say to another water molecule about vapor? Don’t worry it’s just a phase he’ll cool down. Characteristics of Phase Changes. States of matter are also referred to as phases .

saxton
Download Presentation

Phase Changes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phase Changes What did one water molecule say to another water molecule about vapor? Don’t worry it’s just a phase he’ll cool down.

  2. Characteristics of Phase Changes • States of matter are also referred to as phases. • Phase Change: the reversible physical change that occurs when a substance changes from one state of matter to another

  3. PHASE CHANGES

  4. PHASE CHANGES

  5. Phase Change graphic Condensation Vaporization Freezing Melting

  6. Average Kinetic Energy = Temperature Temperature is a measurement of the average kinetic energy of the particles within a substance. Meaning that temperature measures movement of particles. Temperature is proportional to the average kinetic energy of the molecules of a substance. That means if you double the Kelvin temperature of a substance, you double the average kinetic energy of its molecules. When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases. A change in average kinetic energy is not directly proportional to a change in average speed.

  7. Using Temperature to Indicate Phase Change Whenever there is a plateau there is a phase change. This means that there is two phases of the substance at the same time.

  8. Water Phase Change Graph E D 100 gas C Temperature º C. liquid B 0 A solid Heat (thermal energy)

  9. Water Phase Change Graph E D 100 gas C Temperature º C. liquid B 0 A solid Heat (thermal energy)

  10. Water Phase Change Graph E D condensing 100 boiling C Temperature º C. B freezing 0 melting A Heat (thermal energy)

  11. F Between B and C -Heat change in Potential Energy -Particles get farther apart -Temp. stays same -MELTING Between D and E -Heat change in Potential Energy -Particles get farther apart -Temp. stay same -Boiling Between A and B -Heat change in Kinetic Energy -Particles move Faster -Temp. increase -Solid Between C and D -Heat change in Kinetic Energy -Particles move Faster -Temp. increase -liquid Between E and F -Heat change in Kinetic Energy -Particles move Faster -Temp. increase -Gas D E C B A

More Related