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Others Like “Crime Scene Chemistry: The Kastle-Meyer Test for Blood”

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Science Fair Project Idea
There are many different types of vinegar that you can buy to use around the kitchen for cooking and pickling. The chemical compound that gives vinegar its tart taste and pungent smell is acetic acid. Do different vinegars have different amounts of acetic acid? How much variation is there between the different types? Find out for yourself with this science project. Read more
Chem_p045
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Specialty items. Note: this project requires the use of a sodium hydroxide solution, which is caustic. You will need to order this chemical through your school.
Cost High ($100 - $150)
Safety Adult supervision required. Follow appropriate chemical safety procedures.
Science Fair Project Idea
You may have seen police investigators on TV spraying a crime scene with a liquid that glows blue if there is any blood present. The chemical that glows in the liquid is called luminol. In this chemistry science fair project, you will investigate what factors make this interesting molecule "light up." Read more
Chem_p078
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability You will need to order a special kit for this science fair project. You also need access to a digital camera and a tripod. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Wear latex gloves when handling the chemicals.
Science Fair Project Idea
Does your hair go crazy when the weather turns damp? Did you know that strands of hair can relax and lengthen when the humidity increases and then contract again when the humidity decreases? In fact, hair strands can be used as the basis for a hygrometer, a device which measures the humidity level in the air. Can a human hair hygrometer also detect changes in hair structure caused by chemical lightening? This project shows you how to find out. Read more
MatlSci_p020
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items
Cost Average ($50 - $100)
Safety Adult supervision required for working with hydrogen peroxide-based hair lighteners. Wear protective gloves and eye wear.
Science Fair Project Idea
Have you or one of your pets ever been sprayed by a skunk? Hopefully not, but if you have, you probably know that the smell can be very unpleasant and hard to get rid of. There are many "folk remedies" for getting rid of skunk scent, but if you ever do get sprayed by a skunk, how will you know which one to try? In this science project, you will test the ability of various mixtures to remove the bad scent from rags that have been contaminated with bottled skunk scent, and determine which one… Read more
Chem_p104
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires purchasing bottled skunk scent. Do not use a live skunk! See the Materials and Equipment list for details.
Cost Average ($40 - $80)
Safety Skunk odor has a very strong smell that can cause nausea and vomiting. This project must be done in a well-ventilated outdoor area. Eye protection and protective clothing are required to avoid contact with skin and eyes.
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
Did you know that your body needs a certain amount of iron in order to stay healthy? Iron can be found in much of what you consume each day. Almond meal—frequently used in cookies—is just one example of an iron-rich food. However, only a small fraction of the iron in food gets absorbed by the body, partially because the body can only absorb dissolved iron. In this project, you will study whether the acidic environment in your stomach helps dissolve iron. You will use a color-based… Read more
HumBio_p043
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires an iron test kit, available from [# Link Name="Chem_p090.7" Value="HtmlAnchor" #]. The Time Required estimate includes time for obtaining materials. Actual experimental time is only a few hours.
Cost Average ($40 - $80)
Safety The chemicals in the test kit could cause irritation if not handled properly. Be sure to wear gloves, safety goggles, and work in a well-ventilated area. Adult supervision is recommended. The small amount of sulfites contained in the iron indicator tablets may cause an allergic reaction in people who have asthma.
Science Fair Project Idea
Lead is a very hazardous element. Even very small amounts can cause health problems, especially in babies and young children. One way to determine if a household item, such as a toy or a piece of jewelry, contains lead is to soak the item in a solution, and then test the solution for lead that might have leached out of the item. The goal of this chemistry science fair project is to determine how varying the pH of the test solution affects its ability to dissolve lead, which is a critical step… Read more
Chem_p080
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Time Required Average (6-10 days)
Prerequisites Some chemistry knowledge will be helpful.
Material Availability Specialty items: You will need a lead test kit, which can be ordered online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Adult supervision is required. The chemicals used in this science fair project are potentially hazardous. The test solutions contain lead and should not come into contact with skin or any part of your body. It also contains chemicals that produce a strong "rotten egg" smell, so the procedure should be carried out in a well-ventilated area.
Science Fair Project Idea
Enzymes speed up chemical reactions by factors of at least a million. Now that's acceleration! This project investigates how temperature affects how fast these enzymatic reactions occur. Read more
BioChem_p011
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Must have access to a stove, refrigerator, and a freezer.
Cost Average ($50 - $100)
Safety Use caution when handling the hydrogen peroxide, boiling water, stove, and blender. Adult supervision may be required for using the stove.
Science Fair Project Idea
Most people are not aware that the soil around them is a battle scene. The combatants are very small—bacteria on one side and bacteriophage on the other. The bacteriophage (or phage for short) try to pierce the outer coats of the bacteria and inject them with phage DNA. If successful, the DNA will take over the inner machinery of the bacterial cells and force them to make many copies of the phage. After the copies are made, the bacterial cells break apart, releasing new phage that start… Read more
MicroBio_p029
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Time Required Long (2-4 weeks)
Prerequisites This is an advanced science project that requires access to a laboratory with a water bath and 37°C incubator. The kit you will use has enough supplies to perform the procedure one time. To repeat the procedure, you should order additional supplies (listed in the Materials and Equipment section), or make your own media and agar plates. Working with a science teacher or other mentor who is familiar with growing bacteria and titering phage would be helpful.
Material Availability You will need to order the bacteria, the phage, and the supplies from an online science supply store. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety The bacteria (E. coli B) and the phage (T4r) are not dangerous, but you should follow common-sense safety guidelines and wear gloves and safety goggles when working in the lab. Adult supervision is recommended.
Science Fair Project Idea
Have you ever heard that nanoparticles can kill bacteria? You may have even seen some consumer products advertise that they contain antibacterial nanoparticles. A nanometer is one billionth of a meter long. Nanoparticles are usually just a few nanometers in diameter — really, really tiny! So how can something that small kill bacteria which are approximately 700 - 1400 nanometers across? Are they really effective? In this science project you will grow some E. coli bacteria and… Read more
MicroBio_p031
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- Less Details
Time Required Average (6-10 days)
Prerequisites You should be familiar with sterile technique and proper handling of bacterial cultures. If you have questions or need a refresher please consult the [# ProjectGuide Name="Advanced.MicrobiologyTechniquesampTroubleshooting" Value="HtmlAnchor" #] guide
Material Availability Some materials need to be special ordered; see the Materials and Equipment list for details
Cost High ($100 - $150)
Safety You must follow general safety precautions for handling microorganisms. See the [# ProjectGuide Name="Advanced.MicroorganismsSafetyGuide" Value="HtmlAnchor" HtmlShortTitle="true" #] for details.
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