Phase Change What are the phases of matter
- Slides: 42
Phase Change
What are the phases of matter?
What are the phases of matter? Solid Liquid Gas plasma
What are all the phases made of?
What are all the phases made of? All of the phases are made up of molecules!
What has to happen for a phase change to occur?
What has to happen for a phase change to occur? Increase or decrease in energy
So how did we change phases in our hot plate lab?
So how did we change phases in our hot plate lab? Continued to increase the energy by adding heat
What did your graph look like after graphing the data from the hot plate lab?
T-P-S on what each part is representing!
What is A?
What is A? Solid
What is B?
What is B? Phase change!
What is C?
What is C? liquid
What is D?
What is D? Phase change
What is E?
What is E? gas
Recap: What are the plateaus of the graph representing? What are the slopes of the graph representing?
Why are the liquids and gases at a higher temp? What do you think that means about their molecules? T-P-S
What are a Solid’s molecules doing?
What are a Solid’s molecules doing? Staying in place, vibrating Example: think about you sitting in your seat. You can move around a little but stay in place!
What are a liquids molecules doing?
What are a liquids molecules doing? moving, staying mostly together, slow moving compared to gases. Example: You in the hallway
What are a gases molecules doing?
What are a gases molecules doing? moving far apart from each other, fast moving Example: You when the bus horn goes off!
What are plasma molecules doing?
What are plasma molecules doing? They are just like gas molecules but they are IONIZIED (+-+-+) This would be if something got hit by lighting….
What is the shape and volume of these phases based on their molecule movement?
Solid – Definite shape, definite volume Liquid – No definite shape, definite volume Gas – No definite shape, no definite volume Plasma – No definite shape, no definite volume (just like gas)
What did you learn about the y diagram? T-P-S What are the x and y axis labeled? Are they the same for every substance? triple point? Critical point? Where are solids, liquids, and gases of the substance usually found on this graph?
y X axis and y axis?
y Y axis = pressure X axis and y axis? X axis = temp
y Triple point?
y Critical point?
y Solid, Liquid, Gas?
Are the x and the y axis the same for every y (phase change) diagram? Does the y diagram stay the same for every substance?