chapter 12 solutions types of mixtures. classification scheme

Download Chapter 12 Solutions Types of Mixtures. Classification Scheme

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Chapter 12 Solutions Types of Mixtures Slide 2 Classification Scheme Slide 3 Classifying Matter Slide 4 Colloids Many colloids look similar to solutions because their particles cannot be seen. Look homogeneous to the naked eye. Tyndall effect Occurs when light is scattered by colloidal particles dispersed in a transparent medium. Colloids frequently appear "murky" or "opaque". Example: Milk Slide 5 Colloids The Tyndall effect can be used to distinguish between a solution and a colloid. Mixture of water and gelatin Mixture of water And NaCl Weak Electrolytes Any compound whose dilute aqueous solutions conduct electricity poorly. Due to the presence of a small amount of the dissolved compound in the form of ions. Some molecular compounds form aqueous solutions that contain not only dissolved ions but also some dissolved molecules that are not ionized. Examples: CH 3 COOH CH 3 COOH ---------> CH 3 COO- + H+ before 100% 0 0 after 98.2% 1.8% 1.8% Slide 20 What are the electrolytes in Gatorade? Key electrolytes Sodium Potassium Chloride Gatorade Website: Body Tour: Drink Label: Slide 21


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