Mix it Up

1
Mix it Up
2
Introduction

• Who we are?
• Where did we come from?
• How did we get here?
• Why are we here?
• Who are you?
• Why do you want us here?
• Are you having fun yet?

3
Make the Connection

• Homogeneous mixture
• Heterogeneous mixture
• Colloid
• Suspension
• Solution

• Mixtures that looks uniform when shaken but
  separates when no longer agitated.
• Mixture of immiscible liquids in which liquids
  are spread throughout one another.
• Mixtures that are uniform
• Mixtures that are not uniform
• Mixtures of tiny particles of pure substances
  that are dispersed in another substance but do
  not settle

4
Making Mixtures

• Suspensions
• Paints - Pigments are suspended particles in the
  liquid phase. To prevent settling, materials
  called surfactants are used.
• Colloids
• Milk Oily fats and water combine through
  interactions with proteins (that serve like
  surfactants) and homogenization (high energy to
  break down fat particles).
• Solutions
• Inks Washable marker inks contain dyes
  that are soluble in water
• Components of a Solution
• Solute the substance that dissolves in a
  solution
• Solvent the substance that dissolves the
  solute to make a solution

5
Mix it easier

• Increase surface area
• Mixing or Stirring
• Applying heat

6
Exercises

• Experiment 1
• Add sugar cube to beaker 1
• Grind sugar cube transfer to beaker 2
• Grind another sugar cube and add to beaker 3
• Add 100 mL of cold water to beakers 1 and 2
• Add 100 mL of hot water to beaker 3
• Stir all beakers. What conditions were best to
  dissolve the sugar?

7
Exercises

• Experiment 2
• Add water to oil in vial, shake. What happens?
• Add water to oil in vial and 5 drops of
  emulsifier, shake.
• What happens?

8
Exercises

• Experiment 3
• Measure 0.5 g pigment and add to 9.5 g of putty.
  
• Knead to mix.

9
Final Exam

• Salt water, food coloring dyes
• Fruit salad, most of all Crayola products
• Jell-O, paint resins
• Orange juice, salad oil
• Milk, some paints and inks
• Salt water, inks
• Water, paint thinner
• Salt