Chemistry Presented by: Anita Schulek and Ann Cioffi

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.

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.

Warm-Up Chemical 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.

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.

Proceed to the Warm-Up We will create a chemical reaction that will remove the oxidation on the copper penny.

Warm-Up Magic Mud Creating a colloidal suspension

Sometimes changes may be physical Material shape Color Hardness Texture

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.

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

SolidsLiquids Solids maintain their shape Liquids flow and take on the shape of their container. Gases Gases are substances that have no shape

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.

Magic Mud Has the properties of a solid and a liquid at the same time

Warm-Up Slime All materials are made up of atoms joined together. When two or more atoms bond together a molecule is formed.

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.

These long chains of molecules are polymers.

Design Challenge Ice-Cream In A Bag

Chemists It’s all about combining the chemicals that will produce a material with the properties you desire. Whole Milk 1% Milk Cream

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

Ice Cream is also Foam A foam is created when gas molecules like air is mixed in a liquid.

Ice Cream is Emulsion Foam Ice cream is emulsion foam that has been frozen to create a crystalline structure.

Toppings Each chemist will create a unique ice cream.

HAVE FUN!!!!!