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Others Like “Supercooling Water and Snap Freezing”

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Science Fair Project Idea
Have you ever made your own ice cream? If you have, you probably know that you need to get the ice cream mixture really cold to freeze it quickly. Ice cubes alone will not do the job, but if you add chemicals, such as salt or sugar, to the ice cubes that surround the ice cream container, the mixture gets cold enough to freeze. Why does that work? How does adding salt or sugar affect the freezing point of water? Find out with this ice-cold science project and use your results to make your own… 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.
Material Availability A kit for this project is available from the .
Cost Average ($40 - $80)
Safety Be careful when handling the glass test tubes. Exposing them to very cold temperatures or rapid temperature changes makes them more vulnerable to breakage, especially when they get bumped or handled roughly.
Science Fair Project Idea
In this project, you'll learn how to isolate DNA from onion cells, separating it from other cellular components in a manner that still preserves its structure and sequence. In the end, you'll have enough DNA to see with the unaided eye, and you'll be able to spool it to demonstrate its strand-like structure. Read more
BioChem_p001
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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 ethanol because it is very flammable. Adult supervision is recommended for using the stove and a food processor or blender.
Science Fair Project Idea
You're at the high school football game and it's getting pretty chilly as the sun goes down. You're determined to keep cheering for your team, but your hands are freezing—have you ever tried hand warmers? The chemistry within these little packets is pretty cool. Hand warmers provide a unique and fun way to study the chemistry of crystal formation and heat generation. By pressing a button in a pouch, which contains a supercooled solution, you start a rapid exothermic (heat-producing)… Read more
Chem_p085
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability You will need a hand warmer with sodium acetate solution, available in most sporting goods stores. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Adult supervision recommended when boiling the water.
Science Fair Project Idea
Have you ever had a refreshing bath using a bath bomb? A bath bomb is several ingredients mixed and molded into a shape, which becomes fizzy when it touches the water. It can be quite a relaxing experience, especially if your bath bomb has a nice fragrance or includes some bath salts. The fizz is the result of a chemical reaction taking place between different ingredients within the bath bomb. In this science project, you will get to make your own homemade bath bombs and explore how changing… Read more
Chem_p105
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Ingredients for making bath bombs are required to do this science project. See the Materials section for details. Note that the time required for this science project includes shipping and handling time.
Cost Average ($50 - $100)
Safety Adult assistance is required for using the oven.
Science Fair Project Idea
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.
Science Fair Project Idea
Have you ever noticed that the salt you are using says it is "iodized"? Iodine is an important micronutrient, which means we need it in small quantities to be healthy. Because iodine is rare in many people's normal diets, it is added to table salt. Then when people salt their food, they are also adding this important micronutrient. In this food science project, you will use some kitchen-friendly chemistry to investigate which types of salt have iodine added (in the form of iodide) and which do… Read more
FoodSci_p011
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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
Science Fair Project Idea
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
Science Fair Project Idea
If you live in a place that gets cold in the winter, you have probably seen trucks out spreading a mixture of sand and salt on the streets after a snowfall to help de-ice the road. Have you ever wondered how this works? This basic chemistry project can give you some clues. Read more
Chem_p049
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
If you leave an ice cube out on the kitchen counter and come back to check on it in awhile, what do you find? A puddle! The same thing happens to ice in nature—if the temperature gets warm enough, it melts. In this ocean science project, you will find out what happens to sea levels if the ice at the North Pole melts, or if the ice at the South Pole melts. It is an important question for the millions of people who enjoy living along the coasts of the world. Read more
OceanSci_p015
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision is required when making the homemade dough.
Science Fair Project Idea
Everything on our planet is connected together, linked by a giant recycling system called the biogeochemical cycle. It is an amazing process. You can actually investigate how our planet recycles and reuses everything needed to support life by making a small model of the biosphere. What will be important to include in your miniature system so that it can support different types of life? Read more
Geo_p038
+ More Details
- Less Details
Time Required Very Long (1+ months)
Prerequisites None
Material Availability You will need access to a muddy stream, lake, pond, or march in order to collect mud.
Cost Low ($20 - $50)
Safety Always wash your hands with warm water and soap after handling soil that may contain microorganisms. Use caution if you use a knife. Adult assistance may be needed.
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