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Do Now (6 min)

Do Now (6 min). Draw the phase diagram to the right AND LABEL it with the following terms: Pressure Temperature Critical point Triple point. Do Now Discussion. Label the phase diagram with the following terms:. Pressure. Temperature. Critical Point. Triple Point. Mixtures and Solutions.

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Do Now (6 min)

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  1. Do Now (6 min) Draw the phase diagram to the right AND LABEL it with the following terms: • Pressure • Temperature • Critical point • Triple point

  2. Do Now Discussion Label the phase diagram with the following terms: Pressure Temperature Critical Point Triple Point

  3. Mixtures and Solutions Intro Book Notes Debrief

  4. What is a mixture? A combination of two or more pure substances in which each substance retains its individual properties Chrome + Iron = STEEL Salt + H2O = Ocean

  5. Why are mixtures important to us? Humans deal with very few pure substances. Many of the chemicals we work with are actually mixtures! • Pure gold is too soft, so we mix it with other metals • Our drinking water has plenty of minerals and chemicals • We eat them! (Do we eat pure salt?...ew) • Medicine – mix different chemicals in one pill to ease multiple symptoms (cough, fever, aches, pain, etc)

  6. Mixtures gone wrong • Buildings collapse because steel is mixed incorrectly • Adults and children have been killed when the wrong medications have been mixed together • Many people die from illegal drug use because the drugs are mixed with other chemicals: • Lithium (from batteries) • Paint thinner • Ether • Lye • Anti-freeze • Battery acid In order to properly use mixtures, we need to know what they are and what they’re made of!

  7. What are we doing today? Book Notes • Use the sections from the book to find key vocabulary that we will be using. • Use Cornell format! • main topics on the left • vocab words on the right 20 minutes to get the definitions down! Then we’ll go over any missing information at the end of class.

  8. Solubility Vocabulary • Mixture:A combination of two or more pure substances in which each substance retains its individual properties Chrome + Iron = STEEL Salt + H2O = Ocean

  9. Two Types of Mixtures Homogeneous: mixture that has a constant composition throughout Heterogeneous: mixture that does not blend smoothly throughout and in which the individual substances remain distinct

  10. Heterogeneous Mixtures Suspension: mixture with particles that settle out when left undisturbed (unmoved) Colloid: mixture of particles between 1 nm and 1000 nm that DO NOT SETTLE OUT

  11. Homogeneous Mixtures Solute: the substance that dissolves Solution: a mixture of a solute dissolved in a solvent Solvent: the substance that dissolves another substance: the most plentiful substance in a solution = +

  12. Solid in Liquid Solutions Insoluble: A substance that does not dissolve in a solvent Sand is insoluble in water Immiscible: when two liquids separate after being mixed together Oil and water are immiscible Soluble: word to describe a substance that dissolves in a solvent Sugar is soluble in water Miscible: when two liquids are soluble in each other Vinegar and water are miscible

  13. Factors that Affect Solvation Surface Area: increases contact between particles and solvent – more collisions Example: a teaspoon of granulated sugar dissolves faster than a sugar cube Temperature: molecules move faster and solvent and solute collide more Example: sugar dissolves faster in hot water than cold water Agitation: stirring and shaking allow more collisions between solvent and solute particles Example: salt dissolves faster when you stir it

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