Chemistry

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Chemistry

• Presented by
• Anita Schulek and Ann Cioffi

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Chemistry

• The study of the materials (chemicals) that make
  up all of the things on our planet.
• Chemistry will show how these substances combine,
  such as how they react with each other and the
  properties of each chemical.

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Challenge

• The challenge you are about to explore is all
  about chemistry, chemical reactions and classes
  of matter.
• You will perform some experiments, observe
  chemical changes and even design a product by
  selecting the chemicals that go into it.

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Warm-UpChemical Reaction-Removing Oxidation
Have you ever noticed what happens to a shiny new
copper penny over time? It becomes dull and
changes color to dark brown.
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This change in the physical properties of the
penny is caused by oxidation. A chemical
reaction takes place and the copper changes
color.
In the warm-Up activity that follows we will use
chemicals to change and old penny back into its
shiny self.
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Proceed to the Warm-Up

• We will create a chemical reaction
• that will remove the oxidation on the copper
  penny.

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Warm-Up Magic Mud

• Creating a colloidal suspension

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Sometimes changes may be physical

• Material shape
• Color
• Hardness
• Texture

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Reactions can change the chemical property

• You would not eat a chunk of sodium.
• You would not want to inhale chlorine gas, its
  very poisonous.
• Combine the two elements and a chemical change
  takes place creating sodium chloride or salt.

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Phase

• Combining chemicals may also change the phase or
  state of a material.
• Matter can be found in solid, liquid and gaseous
  states.

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Solids Liquids

• Solids maintain their shape

• Liquids flow and take on the shape of their
  container.

Gases

• Gases are substances that have no shape

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Activity

• In the activity that follows, you will combine
  materials to create a colloidal suspension.
• A suspension takes place when small particles are
  suspended in the liquid but do not dissolve.

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Magic Mud

• Has the properties of a solid and a liquid at the
  same time

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Warm-UpSlime

• All materials are made up of atoms joined
  together.
• When two or more atoms bond together a molecule
  is formed.

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Chemical Polymer

• In the warm-up activity you will create a
  chemical polymer.
• Polymers are substance that are made up of
  monomers.
• A monomer is a small molecule that likes to bond
  together with other monomers forming a long chain
  of molecules connected together.

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• These long chains of molecules are polymers.

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Design Challenge

• Ice-Cream In A Bag

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Chemists

• Its all about combining the chemicals that will
  produce a material with the properties you
  desire.
• Whole Milk
• 1 Milk
• Cream

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Ice Cream is an Emulsion

• An emulsion is formed when liquid droplets are
  suspended in another liquid, like the way oil and
  water mix.

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Ice Cream is also Foam

• A foam is created when gas molecules like air is
  mixed in a liquid.

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Ice Cream is Emulsion Foam

• Ice cream is emulsion foam that has been frozen
  to create a crystalline structure.

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Toppings

• Each chemist will create a unique
• ice cream.

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HAVE FUN!!!!!