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Date: 8/29/11 HW: 2.2 CTG, pg. 118, #1-9
• Learning Objectives– Describe the molecular motion of different
physical states
• Success Criteria:• Create an animation to illustrate the behavior of
particles in different phases of matter, and as the material changes phase.
• Observe changes of state of water and describe the process graphically
• Observe a change of state of carbon dioxide and describe the energy transformation involved
• Describe the energy transformation and the roles of kinetic and potential energy as heat energy is transferred to or away from a material
• Describe the behavior of gas particles, based on your observation of how the temperature, pressure, and volume of the gas are affected as heat energy is transferred to or away from the gas
• Characterize materials by their unique phase-change temperatures
• Do Now:– Copy LO and SC
on new left side page
• Agenda:– Do Now– Investigate Part A – Demo Part D– Summary
Do Now
1. WDYS, WDYT p. 1101. (for WDYT—write a sentence describing each
diagram!)
2. Start setting up notebook– Parts A, C, and D– Set up a table—30 second increments for 15
minutes– Complete sentence structures
Do Now
• What are the main differences between a solid, liquid and a gas?– List at least 2 differences
• Please write 3 examples of each.
Whiteboarding
• In the 3 squares, draw as a group what you think the particles look like in a solid, liquid, and a gas.
Eureka!
• http://www.animatedscience.co.uk/flv/
Videos 16, 17, 18
Notebook Set Up
• Set up numbers 1-9 in your notebook– Be sure to include a data table on one page– 30 second increments for 15 minutes
Investigate
• Part A:– Complete #1 in Notebook– Set up notebook for #2-8, OK with Teacher– Complete #2-8
On a sheet of graphing paper, graph out your points!– Use your data to answer all questions for #9,
graph paper will be provided.
Do Now
• Look at your graph from Weds/Thurs—what are some interesting points?– What is happening in your mind when the graph
goes flat?– What is happening when the graph rises?
• Use the words ‘thermal’ and ‘phase’ energy in your response.
Energy
• LOL Diagrams
• Thermal Energy (Kinetic motion of the molecules)—Temperature (KE of molecules)
• Phase Energy (with phase changes)
Whiteboarding
As a group1) Draw the shape of your heating curve2) Label the states of matter3) Label the melting point and boiling
point4) Draw what you think is happening to
the energy at each point (where is phase energy, where is thermal energy)
Eureka!
• http://www.animatedscience.co.uk/flv/
• Videos 19, 20, 21
Proficiency Check
• Draw a quick heating curve for mercury.– Label the x and y axes– Label where the solid, liquid, and gas phases are– Put where you think the heat from the burner is
converted to phase energy and thermal energy
Do Now:
The three states of matter are Solid, Liquid, and Gas.
Between which states of matter the following transitions fall:Ex: Condensation: Gas Liquid
1) Evaporation2) Freezing3) Melting4) Vaporization
Proficiency Check
Bromine has a melting point at -7.8oC and a boiling point at 58.8oC. Sketch a heating curve for Bromine.Answer the following questions.1) What state is bromine in at the melting point
of water? (0oC)2) The temperature is lowered to -75oC. Describe
the shape as either definite or indefinite.
Do Now
Trace this cooling curve in your notebook. Label the parts of the curve that are solid and liquid, and the melting point.