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Others Like “Crime Scene Chemistry: Determine the Identity of an Unknown Chemical Substance”

Science Fair Project Idea
Here's a practical engineering challenge: you need to build an enclosure for your dogs, using material that they can't chew through. It's going to be a lot of work to build, so you want to do it right. What material should you choose for the fencing? This project uses the scientific method to evaluate materials. Read more
MatlSci_p018
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
The iodine clock reaction is a favorite demonstration reaction in chemistry classes. Two clear liquids are mixed, resulting in another clear liquid. After a few seconds, the solution suddenly turns dark blue. The reaction is called a clock reaction because the amount of time that elapses before the solution turns blue depends on the concentrations of the starting chemicals. In this chemistry science fair project, you will explore factors that affect the rate of the iodine clock reaction. Read more
Chem_p091
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Time Required Average (6-10 days)
Prerequisites You should be attending or already have taken an introductory chemistry class. This science fair project requires careful attention to detail and will involve some creative problem solving and independent research on your part.
Material Availability You will need to order a chemical kinetics kit online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Wear safety goggles when working with all chemicals. Hydrochloric acid is corrosive to hands and eyes. Wear splash goggles and gloves when handling acids.
Science Fair Project Idea
There's nothing quite like the smell of fresh-baked muffins for breakfast on a Saturday morning! If you're into baking, you might want to try this project, which will give you insight into some of the chemistry that's going on in your muffin batter. You'll get some practical knowledge about substituting ingredients. Who knows, it may even get you started on the path to some new culinary inventions! Read more
FoodSci_p008
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Time Required Short (2-5 days)
Prerequisites Previous experience with baking is helpful, but not absolutely necessary.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Minor injury possible: hot oven.
Science Fair Project Idea
thumbnail If you like to bake, this could be a good science project for you! Have you ever wondered about the purpose of each of the ingredients in your favorite recipes? For example, why is baking powder used in some muffin recipes? How does the baking powder affect how the muffins look, feel, and taste? In this food science project you will use a scientific method to find out! Read more
FoodSci_p007
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Time Required Short (2-5 days)
Prerequisites Previous experience with baking is helpful, but not absolutely necessary.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Minor injury possible: hot oven. Be sure to have an adult help when using the oven.
Science Fair Project Idea
thumbnail Did you know that your body needs a certain amount of iron in order to stay healthy? Iron is an essential part of the hemoglobin complex in your blood, which carries oxygen from your lungs to the rest of your body. It is also involved in many other biochemical processes in your body. Iron can be found in much of what you consume each day. In this chemistry science fair project, you will use a simple test kit that produces an orange-colored chemical in the presence of iron in a solution. The kit… Read more
Chem_p089
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Time Required Average (6-10 days)
Prerequisites You should be enrolled in or already have taken an introductory chemistry class.
Material Availability You can order an iron test kit online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety The chemicals in the test kit could cause irritation if not handled properly. Be sure to wear safety goggles and gloves when working with chemicals. Adult supervision is recommended.
Science Fair Project Idea
thumbnail When biologists want to separate different pieces of DNA, RNA, or proteins they use a technique called gel electrophoresis. In this science project you'll build a gel electrophoresis chamber and use it to discover how many components are in different colors of food coloring dye. Read more
BioChem_p028
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
When you burn a piece of wood, you start with wood and oxygen, and end up with ashes, carbon dioxide, and water vapor. At no time during the reaction does wood reappear, even momentarily, from the ashes. Most chemical reactions are like this; they move in one direction, from reactants (starting chemicals) to products. In this chemistry science project, you will experiment with a rare and exotic reaction that oscillates. The reaction products appear and disappear for a number of cycles. Because… Read more
Chem_p097
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Time Required Long (2-4 weeks)
Prerequisites A class in chemistry would be helpful, but is not required.
Material Availability You will need to order the Oscillating Chemical Reaction Kit online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Adult supervision is required. Minor injury is possible. Be sure to wear safety goggles.
Science Fair Project Idea
thumbnail Soap comes in many varieties and forms—from bars to bottles to boxes. The uses for soaps are just as expansive—from cleaning our hands, hair, and faces to a variety of household cleaning jobs, such as dishes or laundry. One thing all these different soaps have in common is their chemical origin; they were all made by mixing fat or oil with a strongly basic solution, such as lye. In this chemistry science project, you will carry out the chemical steps needed to transform coconut oil… Read more
Chem_p096
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Time Required Average (6-10 days)
Prerequisites This procedure should be done in a chemistry lab with adult supervision.
Material Availability Some specialty items are needed; see the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety Minor injury is possible. This procedure requires use of sodium hydroxide solution. Sodium hydroxide can burn skin and eyes. See the Experimental Procedure for important cautionary notes. Adult supervision is required.
Science Fair Project Idea
thumbnail Some chemical reactions occur explosively fast, others may occur almost imperceptibly s-l-o-w-l-y. This project explores what effect the particle size of the reactants has on the speed of a chemical reaction: production of carbon dioxide gas by an Alka-Seltzer® tablet. Read more
Chem_p028
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision recommended when working with hot water solutions
Science Fair Project Idea
thumbnail Do you like reading detective stories or watching crime shows on TV? This advanced project idea in the area of forensic science might be right for you. Read more
BioChem_p009
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Time Required Average (6-10 days)
Prerequisites High School Biology
Material Availability This project requires you to order specialty items and have access to some laboratory equipment, see the Materials & Equipment section for more details.
Cost High ($100 - $150)
Safety No issues
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