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

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

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 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

Investigate

• Part C and Part D– Demo– LOL diagram for part D

states-of-matter_en.jnlp

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

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.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.

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?