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Others Like “Determining Iodide Content of Salt”

Project Idea
Have you ever wondered how fun toys like Silly Putty, Gak, and Slime are made? These products are so much fun because of the properties of polymers, which make them delightfully bouncy, stretchy, sticky, moldable, breakable, hard, soft, and just plain fun! In this science project you can be the developer of your own putty product by changing the ratio of ingredients to change the physical properties of your putty polymer. By describing the physical properties of your results, you can choose… Read more
Chem_p012
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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 required. Borax is harmful if swallowed. On rare occasion handling borax can result in rashes.
Project Idea
Have you ever tasted a delicious burger and wondered how it got so much flavor? Maybe you've heard your family talk about marinating foods before cooking or grilling them. A marinade is a mixture of seasonings used to flavor or tenderize food. Most cooks have strong opinions about the best way to marinate their favorite food, be it a large steak or a tofu burger. In this cooking and food science fair project, you will run controlled tests to see what factors are most important in making a… Read more
FoodSci_p043
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision is required. Use caution and ask an adult to help you use the knife.
Project Idea
thumbnail 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.
Project Idea
thumbnail 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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Time Required Average (6-10 days)
Material Availability Readily available
Cost Low ($20 - $50)
Project Idea
thumbnail Maple syrup on pancakes, ripe bananas, and soft drinks are all foods that are tasty to us because of the sugar in them. But did you know there are different kinds of sugar? One food can have multiple kinds of sugar in it, and our bodies actually process the different types of sugars differently. In this science project, you will measure the concentration of two sugars, glucose and sucrose, in different foods and investigate how sucrose is converted into glucose with the help of an… Read more
HumBio_p035
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Time Required Average (6-10 days)
Prerequisites None
Material Availability The invertase for this science project needs to be specially ordered. See the Materials and Equipment section for more details.
Cost Low ($20 - $50)
Safety No issues
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.
Project Idea
thumbnail You have probably heard the saying that "water and electricity don't mix." Well, in this chemistry science fair project you will mix them, to create two solutions, one basic and one acidic. The apparatus is very simple, but the chemistry is complex and offers many avenues for exploration. Read more
Chem_p087
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- Less Details
Time Required Average (6-10 days)
Prerequisites You should know what the pH scale is, and what current and voltage measure in a circuit.
Material Availability A pH meter is required for this project. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Minor injury is possible. Be careful not to short out the battery, as it may get very hot.
Project Idea
thumbnail Have you ever been to a buffet and found yourself surrounded by a wide variety of taste sensations? People are generally able to discern five basic tastes: sweet, umami (also known as savory), salty, sour, and bitter. How sensitive is a person's tongue for these basic tastes? Is it easier to detect some flavors at low concentrations compared to others? In this human biology science project, you will find out by exploring your taste thresholds for sweetness, saltiness, and sourness. Get ready to… Read more
HumBio_p013
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Project Idea
Pennies are bright and shiny when they're new, but become quite dull with time. What causes such a drastic change? Oxygen in the air combines with the copper in the penny to form copper oxide, which makes the penny look dull and dingy. You can make the pennies look like new again by soaking them in an acidic solution, like vinegar. Vinegar dissolves the copper oxide, making the pennies look like new. It turns out, however, that the same process that makes the pennies shiny has bad consequences… Read more
Chem_p090
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability You will need to order copper test kits online. See the Materials and Equipment list for details.
Cost Average ($40 - $80)
Safety Adult supervision is recommended.
Project Idea
thumbnail We have all heard the old saying, "One bad apple spoils the whole bunch." Due to the production of the plant hormone ethylene during the ripening process, this saying proves true! This experiment will investigate the role of ethylene in the process of fruit ripening. Read more
PlantBio_p009
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Require sponsor
Cost Average ($50 - $100)
Safety Adult supervision required. Protective gloves, eyewear and lab coat required when working with iodine solutions.
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