Particles

• What are the three physical states of matter?

  Solid, Liquid, Gas
• Describe what the particle models look like

  Solid - Touching, orderly rows, Liquid - Touching, random, Gas - Not touching, random
• Name all changes of state

  S-G: Deposition, G-S: Sublimation, S-L: Melting, L-S: Freezing, L-G: Evaporation, G-L: Condensation
• What do the changes of state result from?

  Sublimation, melting, evaporation = heating/+energy, Deposition, freezing, condensation = cooling/-energy
• What are particles held together by?

  Strong chemical bonds or weak intermolecular forces
• What is diffusion?

  Going from an area of high concentration to an area with low concentration
• What is pressure?

  How spread out a force is over an area
• How do we calculate pressure?

  Pressure = force/area
• How do we increase pressure?

  Increase the size of the force acting and decrease the area it has to act over
• What is density?

  How much mass is in a certain volume
• How do we calculate density?

  Density = mass/volume
• What can we call single gas atoms?

  Monatomic
• What can we call multiple gas particles?

  Diatomic