Milk and Soap Experiment

Description:  Milk is made up of water, fat, and proteins. Each of these molecules have charges and are held together by intramolecular forces. When the dish soap is added to the plate it quickly disperses across the surface as it is attracted to the water molecules and the food coloring is pulled along. This could be used as an anchoring phenomenon on matter, materials, or intramolecular forces.

Web Resource:  Colors on the Mooooove - ACS

Watch what happens when you put a drop of dish detergent into a plate layered with milk and food coloring! James Kessler explains the chemistry that causes this tie-dye-like reaction and gives a demonstration for kids to follow along with at home. Try the experiment at home! http://www.acs.org/content/acs/en/education/whatischemistry/adventures-in-chemistry/experiments/colors-move.html Subscribe! http://bit.ly/AmerChemSOc Facebook!

Reaction in a Bag

Description:  This video shows a chemical reaction of sodium bicarbonate (baking soda), calcium chloride (road salt), and an indicator phenol red. The chemicals react to form calcium carbonate, sodium chloride, and carbon dioxide gas. This changes the pH inside the bag resulting in a color change in the phenol red. As much air as possible should be removed from the bag as possible to show the production of the gas. This could be used as an example of chemical reaction that releases energy (exothermic). Since the bag is sealed it could be massed before and after to show the conservation of mass (atoms). This phenomenon was submitted by Brian Babulic.

Web Resources:  Reaction in a Bag - Flinn Scientific, American Chemical Society - Explanation

This video show the chemical reaction between phenol red liquid, sodium bicarbonate (white powder), and calcium chloride (white bits). There is a chemical reaction that produces carbon dioxide gas which inflates the bag, heat, and color changes to yellow. ScienceFix.com producer: Darren Fix

Will It Conduct?

Description:  Conductivity is an excellent way to classify material by their observable properties. Conducting material (e.g. metal), non-conducting material (e.g. plastic), and semi-conducting material (e.g. graphite) should all be used. A simple circuit with a lightbulb is used to determine the conductivity of different materials. These properties can be used to determine if a chemical change has occurred by testing before and after substances have been mixed. These properties can also be used in the design of an engineering solution.

Web Resource:  Teach Engineering - Conductivity

Students build their own simple conductivity tester and explore whether given solid materials and solutions of liquids are good conductors of electricity. View the full activity on TeachEngineering: https://www.teachengineering.org/activities/view/cub_electricity_lesson04_activity1 TeachEngineering has over 1,500 FREE lessons and activities. Visit https://www.teachengineering.org/ for more! Music: Blue Skies - Silent Partner

Precious Plastic

Description:  Precious Plastics was created in 2013 by Dave Hakkens. It is a website that shares DIY plans for building machines that can recycle plastic. Plastic is recreated through a non-reversible reaction and if it isn't recycled this valuable plastic is often lost forever when it is dumped in a landfill. These plans have spawned a community of DIY plastic recyclers around the world. Even though most students lack the ability to construct these machines it may lead to simple projects like the Ecobricks project linked below.

Web Resources:  Precious Plastic, Ecobricks - plastic, solved

We developed DIY machines that enable everyone to build a little plastic workshop. Now share it into every corner of the world and let the recycling begin! http://preciousplastic.com A project by http://davehakkens.nl