October 26, 3015 1) List the four state/phases of matter 2) Draw a diagram of the three most common phases.

Today Finish Lab Stations Notes: Phase Changes Homework: Homework Packet #2 part 1&2 Reminder: Quiz tomorrow over Physical/ Chemical Changes and Matter & Mixtures

After today… (our goals) You should be able to describe 3 main states of matter You should be able to explain the difference between temperature and heat.

What is matter? What is matter made of? The stuff that makes up all things What is matter made of? Atoms, molecules, particles that are always moving

Intermolecular Forces Inter- between or among Molecular- refers to molecules (which are the building blocks of all things!) Intermolecular forces = forces between molecules

States or Phases of Matter Solid Energy of Molecules: Little, not a lot Intermolecular Forces: STRONG! (keep it together!) Volume: Definite (cannot be changed) Shape: Definite (cannot be changed)

States or Phases of Matter Liquid Energy of Molecules: Medium, more than solid Intermolecular Forces: Not as strong Volume: Definite (cannot be changed) Shape: Not definite (can be changed)

States or Phases of Matter Gas Energy of Molecules: Lots! Intermolecular Forces: Weak (don’t really need to be held together) Volume: Not definite (can be changed) Shape: Not definite (can be changed)

States Of Matter What do they look like on a molecular level?

States or Phases of Matter Plasma We don’t know much about it Found in space NOT the same as plasma in TVs

Q: How does matter go from one state to another? Solid  Liquid Energy: Added Called: Melting Example:

Q: How does matter go from one state to another? Liquid  Gas Energy: Added Called: Vaporization (boiling or evaporation) Example:

Q: How does matter go from one state to another? Liquid  Solid Energy: Removed Called: Freezing Example:

Q: How does matter go from one state to another? Gas  Liquid Energy: Removed Called: Condensation Example:

Q: How does matter go from one state to another? Solid  Gas (no stop at liquid) Energy: Added Called: Sublimation Example:

Q: How does matter go from one state to another? Gas  Solid (no stop at liquid) Energy: removed Called: deposition Example:

Homework Homework Packet #2 Parts 1&2 Finish Lab Questions