Do NOW Textbook Open your textbook to page

Do NOW Textbook Open your textbook to page 407 Answer all of the questions – compare your answers with your table group. Review Quiz each other on chapter 11 vocabulary. 1

Homework and Announcements • Due – • Textbook pages 402 -406 • Vocabulary mind map in notebook • Vocabulary Quiz Today • Science report updates • Homework USA Test. Prep, Remediation 2

Quick Review • What is a solution? mixture containing a solvent and at least one solute • What is a solvent? part of solution – usually largest amount universal solvent – H 20 • What is a solute? part of solution that is dissolved by the solvent 3

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Table of Contents: Solubility L. O. SWBAT determine what factors affect solubility. SC. 8. P. 8. 9 Distinguish among mixtures (including solutions) and pure substances. 5

Dilute Solution vs Concentrated Solution ² dilute solution – mixture with only a little solute dissolved in the solvent. ² concentrated solution – mixture with a lot of solute dissolved in the solvent. 6

Solubility The maximum amount of solute that can dissolve in a specific amount of solvent usually 100 g. g of solute 100 g water 7

Saturated vs Unsaturated l A saturated solution contains the maximum amount of solute that can dissolve. Un-dissolved solute remains. l If you can continue to dissolve more solute in a solution then it is unsaturated. 8

Read Page 403 – Working with solubility 9

Apply your Knowledge At 40 C, the solubility of KBr is 80 g/100 g H 2 O. Indicate if the following solutions are (1) saturated or (2) unsaturated 2 A. ___60 g KBr in 100 g of water at 40 C 1 B. ___200 g KBr in 200 g of water at 40 C 2 C. ___25 KBr in 50 g of water at 40 C 10

Affect of Temperature 0° 20°C 50°C 100°C Solubility (g/100 g H 2 O) KCl(s) Na. NO 3(s) 27. 6 74 34. 0 88 42. 6 114 57. 6 182 The solubility of most solids increases as temperature increases. Lecture. PLUS Timberlake 11

Affect of Temperature 0°C 20°C 50°C Solubility (g/100 g H 2 O) CO 2(g) 0. 34 0. 17 0. 076 O 2(g) 0. 0070 0. 0043 0. 0026 The solubility of most gases decreases with an increase in temperature. 12

Learning Check A. Why would a bottle of carbonated drink possibly burst (explode) when it is left out in the hot sun ? B. Why would fish die in water that gets too warm? 13

Answers A. Gas in the bottle builds up as the gas becomes less soluble in water at high temperatures, which may cause the bottle to explode. B. Because O 2 gas is less soluble in warm water, the fish may not obtain the needed amount of O 2 for their survival. 14

Read Page 404 – Factors Affecting Solubility 15

Summary Imagine you work for a bottling company and the cola your company produces keeps coming out flat. Write an e-mail to your boss describing changes you should make to have the ideal conditions for bottling fizzy cola. Use vocabulary words. (Pages 404 -405) Solubility, pressure, solvent, temperature 16

Atomic Model - Review • Packet– Due by the end of class • Question: Can the atomic model explain patterns in nature? • Claim: Elements in the same group have the same # of valence e –. As a result, elements in each group have similar properties. 17

Independent Work Vocabulary Quiz Remediation 18