2.2 States of Matter: Solid, Liquid, Gas Active Chemistry

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 WDYS, WDYT p. 110 Start setting up notebook (for WDYT—write a sentence describing each diagram!) 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

Do Now: Take 5 minutes and make sure you have your notebook set up

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 group 1) Draw the shape of your heating curve 2) Label the states of matter 3) Label the melting point and boiling point 4) 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

Investigate Part C and Part D Demo LOL diagram for part D

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 Evaporation Freezing Melting Vaporization

Vocab Boxes Use the Chem Talk on pg. 114-116 Vocab Boxes

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. What state is bromine in at the melting point of water? (0oC) 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.

Summary/Reflection Go through and prove that you satisfied the Learning Objective Highlight areas in your notebook and write a paragraph talking about those areas When finished: Essential Questions-pg. 117 What does it mean? How do you know? Why should you care?