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Others Like “How Do You Get Heat from a Supercooled Solution? Explore the Chemistry Within Hand Warmers”

Project Idea
Can water remain liquid below its normal freezing point? If it does, that water is supercool(-ed). This project shows you a method for supercooling water. You can test water from different sources to see whether or not it can be supercooled. Read more
Phys_p033
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Project Idea
thumbnail Instant cold packs are popular with coaches and parents for treating minor bumps and bruises. The instant cold packs are not pre-cooled—you just squeeze the cold pack and its starts to get cold. So how does it work? In this chemistry science fair project, you will investigate the chemical reaction that occurs in instant cold packs. Read more
Chem_p081
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A few specialty items, including instant cold packs containing ammonium nitrate, are needed.
Cost Average ($50 - $100)
Safety Adult supervision is required. Ammonium nitrate is potentially hazardous, wear gloves and safety goggles when working with it. Avoid contact with skin and eyes.
Project Idea
thumbnail Crystals come in all different shapes and sizes. However, the purest and cleanest crystals are usually also the ones that grow to be the largest in size. In this science fair project, you will compare the size and shape of crystals grown in three different temperature conditions: room temperature, in the refrigerator, and in an ice bath. With just water and borax, a household cleaning product, you can discover the best recrystallization method for growing large, pure crystals. Read more
Chem_p082
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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 required when handling boiling water and borax. Borax is harmful if swallowed, inhaled, or contacts eyes. On rare occasion touching borax can result in rashes
Project Idea
thumbnail Have you ever been so cold sitting in your house in the winter that you feel icicles could grow off your nose and your feet could turn into blocks of ice? Or have you ever been so hot in your house in the summer that sweat just drips off you? Making yourself comfortable can mean turning on the heater or the air conditioner—but that costs money. Still, being cozy or cool doesn't have to cost a lot of money if you use a geothermal heat pump. In this project you will build a model… Read more
Energy_p040
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability To make a geothermal heat pump you will need a pond pump. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety Exercise caution when working with electrical equipment and water. Adult supervision is required.
Project Idea
thumbnail What is the first thing you do when you wake up on a cold, frosty morning? Snuggle down deeper under the covers? Animals, like puppies and piglets, do not like being cold either, but they do not have hands or blankets to wrap themselves up. So when animals get chilled, they change their behavior and do things like huddle—they curl up close to other animals. In this mammalian biology science fair project, you will see just how much huddling can help reduce heat loss. Read more
MamBio_p027
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Use caution when handling glass jars or thermometers, as they can break or crack if dropped. Adult supervision is required when using the stove.
Project Idea
Imagine that you are a detective investigating a murder. You have a body that was found in a swimming pool, and someone reported hearing an argument near the pool at 10:00 PM the night before. Your first question might be "Was this person killed around 10:00 PM last night, or at some other time?" One way to answer this question is to measure the internal temperature of the body. The longer ago the killing occurred, the colder the body. But can you assign a specific time of death to a specific… Read more
Phys_p079
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Project Idea
thumbnail Have you ever wondered where acne comes from and how you can treat it? One major cause of acne is the colonization and infection of clogged pores with bacteria. In this science project, you'll test different acne medications and treatments to determine their effectiveness at killing bacteria. Read more
MicroBio_p019
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites None
Material Availability This science project requires access to some laboratory equipment, such as a 37°C incubator, as well as some specialty reagents, which can be ordered online. See the Materials and Equipment list for more details.
Cost High ($100 - $150)
Safety This science project involves the use of the bacterium E. coli. Standard microbiology and bacterial safety guidelines should be followed, see the [# ProjectGuide Name="Advanced.MicroorganismsSafetyGuide" Value="HtmlAnchor" HtmlShortTitle="true" #] for more details. To maintain a sterile environment, you will be working near a lighted Bunsen burner. Keep all flammables, including hair and clothing, away from the flame.
Project Idea
thumbnail This physics project seems like it should have an easy answer. Instead, it turns out to be a great illustration of why it is important to base scientific conclusions on the outcome of controlled experiments. Things don't always turn out as we expect! Read more
Phys_p032
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- Less Details
Time Required Average (6-10 days)
Prerequisites Careful attention to the details of your experimental method are required for this project.
Material Availability Specialty items
Cost Average ($40 - $80)
Safety Adult supervision recommended for heating water and handling hot water.
Project Idea
thumbnail Have you ever made your own ice cream? If you have, you probably surrounded the ice cream container with ice and rock salt to get the mixture cold enough to freeze. But why does that work? How does adding salt (or other substances) affect the freezing point of water? Find out with this ice-cold science project. Read more
FoodSci_p013
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- Less Details
Time Required Short (2-5 days)
Prerequisites Understanding the concepts of molecular weight and moles. Access to a gram balance accurate to 0.1 gram.
Material Availability Specialty items are needed. See the Materials tab for details
Cost Average ($40 - $80)
Safety No issues
Project Idea
thumbnail Big, puffy, cotton-like clouds, and the bubbles in a pot of boiling water may not seem like they have much in common, but they do—both are formed by a heat-transfer process called convection. Warmed gases and liquids rise, while cooler ones fall, creating currents and mixing things up. Whether making processed foods in a factory or making plastic or metal parts, knowing how to mix up a big tank of hot and cold liquids or gases quickly is important. Engineers must rely on experimentation… Read more
ApMech_p044
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision is recommended while pouring the boiling water.
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