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Weekly Warm Up

What is a mixture? What are the two types of mixtures? What is a solution? Give an example of a solution. A substance made up of two or more substances that can be easily separated by physical means. Homogeneous Heterogeneous. Weekly Warm Up.

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Weekly Warm Up

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  1. What is a mixture? • What are the two types of mixtures? • What is a solution? • Give an example of a solution. A substance made up of two or more substances that can be easily separated by physical means. • Homogeneous • Heterogeneous Weekly Warm Up A homogenous mixture contains two or more substances blended uniformly. (evenly throughout ie. Looks the same) • Salt water, vanilla ice cream, brass, air

  2. Solutions IPC - Chapter 21

  3. What makes solutions so special? • The ocean is a solution. • Our cells are made of solutions. • Some flavorful foods we love are tasty because of solutions. • Solutions have properties that are different from their separate parts…

  4. What are solutions? homogeneous solvent solute • A solution is…a _____________ mixture composed of a _______ and one ______ or many solutes. • The solvent is the substance present in the greatest amount. • It does the dissolving. • The solute is the substance there is lessof. • It is dissolved. • A ________ can exist as a solid, liquid or gas. • Air (g) is a solution. Steel (s) is a solution called an _____. solution alloy

  5. These are solutions:

  6. Can anything make a solution? Soluble • _______– describes a solute that can be dissolved into a solvent. • Ex: Salt is soluble in water. • _________ – describes a substance that cannot be dissolved by a solvent. • Ex: Sand is insoluble in water. What about two liquids? • ________ – two liquids that are soluble in each other. • Ex: Water and alcohol ___. • __________ – two liquids that do not mix. • Ex: Oil and water are immiscible. Insoluble Miscible mix Immiscible

  7. How do things dissolve? Cation (+) & Anion (-) physical • Dissolving is a ________ process. • Polar solvents can “pull” the ions in an ionic compound apart. • For covalent molecules, intermolecular forces are disrupted by the solvent. • “Likedissolveslike” • The process of solute particles being surrounded by solvent particles is called ____________. • Water is the _________ _______! Metal & NM NM only SOLVATION universal solvent

  8. http://www.youtube.com/watch?feature=player_detailpage&v=EBfGcTAJFohttp://www.youtube.com/watch?feature=player_detailpage&v=EBfGcTAJFo

  9. Factors that affect the RATE of solvation: (Surface Area) • Particle Size • The _______the solute particles are, the _____they will dissolve. • Shaken…or stirred • _________, shaking or stirring, of the solution __________ the rate of solvation. • Temperature • The _______ the______ ______ of the solvent particles, the _______ it can dissolve a solute. smaller faster Agitation increases (measure of kinetic energy) kinetic energy higher faster

  10. Warm-Up: Self Test #1 of 5

  11. Self-Test #1 • Answer: F • Oxygen is partially negative • Self-Test #2 • Answer: B • Concept: aqueous solutions are more dense than water

  12. Rate of Solvation – TAKS Questions

  13. Answers: Rate of Solvation • 3. Question #10 • Answer: J • 4. Questions #16 • Answer: F • 5. Question #17 • Answer: A http://water.org/news/lesson-plans/

  14. Weekly Warm Up • What is a solute? • What is a solvent? • What factors increase solvation? • Intro: https://www.youtube.com/watch?v=RMqsvJeN8b8 The substance(s) that are being dissolved; least amount. The substance that is dissolving; greatest amount. • Size of solute • Stir, mix, shake = • Increase Temperature (i.e. Surface area) Agitate

  15. Gas Solubility Lab: https://www.youtube.com/watch?v=K3j9HAsoV5Q Acidic Solution via Dry Ice (CO2) Demo https://www.youtube.com/watch?v=Pu_OhvLwcaU

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