So far this unit we’ve talked about Properties of Matter (think ductility, luster, density, boiling point, etc) and phases of matter (solid, liquid, gas, plasma, and Bose-Einstein Condensates). But one of the most important concepts in this unit is understanding the way energy is absorbed or released in the transition from one phase to the other.
We saw several demonstrations of phase transitions–my heat pack, the can-crushing, and your lab too.
Good Day Foundations of Science! While I’m away, I expect my students to be on their best behavior.
First, we’ll be taking a quiz. Use your notes from last class and the Phases Graphic to prep for the Quiz.
Today we’ll watch a ‘cool’ (lol!) video about the relationship of temperature and phase of matter: The Race to Absolute Zero. Remember that our Kinetic Model of Molecules states that Heat is really just how much the atoms or molecules move (or vibrate). So if you can stop them, you can have Zero Heat.
While you are watching be sure to take notes on these questions:
What is Absolute Zero?
How the scientists cool the atoms? With a fridge?
Why are scientists interested in getting closer to Absolute Zero?
We are starting a long Unit on Matter this week. We began by talking about what a Property of Matter is, what the difference between Intensive and Extensive properties are (one is useful, one is not!), the difference between Physical and Chemicalproperties and listing and applying some basic extensive physical properties like luster, color, and phase of matter. The slides are below. The guided notes are here: HERE. There was also Homework from last class: p.270-275. Questions 1-6 on pg. 275. (your brown text book)