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WRAP UP http://goo.gl/forms/DGR1RUWxze

IF ABSENT: Please get the worksheet below (PRINT) or in class and read the soap article and answer the 5 questions.

1. Students will characterize the properties that describe solutions and the nature of acids and bases.
2. Explain the process of dissolving in terms of solute/solvent interactions:

¥ Observe factors that effect the rate at which a solute dissolves in a specific solvent,

¥ Express concentrations as molarities,

¥ Prepare and properly label solutions of specified molar concentration,

¥ Relate molality to colligative properties.

Learning Objectives:

á Determine the properties of water that support its many uses.

á Explain the high surface tension and low vapor pressure of water in terms of the structure of the water molecule and hydrogen bonding.

á Describe the structure of ice.

á Distinguish the difference between solvent and solute.

á Calculate molarity and molality

DAY 1

(5 min) Hook/activator: How does soap work? (video)

(5 min) (lead in) Prior Knowledge: Review first semester terms: colloid, hydrogen bonding, polarity, questions (surfactants definition/surface tension) - book, Google, ppt

(10 min) Target: what is surfactant? Surface Tension (video of walking on water or walking on cornstarch (Ellen and Steve Spangler))

Submit to google form: Set purpose and procedure

(10 min) DEMO: Corn Starch + Water = Colloid (show video of three glasses)

Using a speaker and a song with base, show how the properties of the colloid changes with pressure. We cannot see through a colloid (list examples: fog, milk, soap water with oil).

(20 min) Experiment

Differentiation: by ability and by learning preference

L1-steps

L2- here are your materials to determine these objectives, general directions

L3-Design an experiment to test surface tension and here are your materials

(5 min) Wrap up: did you meet learning goal? conclusion? (Google Form)

Ending Reflection: Be pondering how does soap work and molecularity what does it look like?