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Others Like “Investigate the Vitamin C Level in Bell Peppers During Various Stages of Ripeness”

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Science Fair Project Idea
thumbnail As you know, vegetables not only taste good, but they are good for you. Many vegetables are a great source of vitamin C. Vitamin C is a water-soluble antioxidant that plays an important role in protecting the body from infection and disease. Humans do not make vitamin C on their own, so we must get it from dietary sources. Potatoes, like the ones shown in Figure 1, below, are one good source of vitamin C. Does cooking them affect how much vitamin C they have? In other words, if you boil a… Read more
FoodSci_p024
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Titration equipment and supplies are needed. A kit is available from the [# Link Name="Chem_p044.7" Value="HtmlAnchor" #].
Cost High ($100 - $150)
Safety Adult supervision is required. Iodine solution is poisonous. Avoid skin and eye contact. Wear chemical safety goggles and rubber gloves when handling the concentrated solution. For more tips, consult the Science Buddies [# ProjectGuide Name="Advanced.ChemistrySafetyGuide" Value="HtmlAnchor" HtmlText="Chemistry Safety Guide" #].
Science Fair Project Idea
thumbnail Are oranges highest in vitamin C when they are fresh from the tree (or, in a pinch, the grocery shelf)? Does the amount of vitamin C in an orange change over time, after it has been picked? In this science project, you will find answers to these questions by measuring the amount of vitamin C in a solution using an iodine titration method. Read more
Chem_p043
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Time Required Long (2-4 weeks)
Prerequisites Ideally you would have your own citrus tree with ripe fruit for this science project. The second-best option is to use citrus fruit from a store.
Material Availability Titration equipment and supplies are needed. A kit is available at the [# Link Name="Chem_p044.7" Value="HtmlAnchor" #]. See the Materials tab for details.
Cost High ($100 - $150)
Safety Adult supervision required. Concentrated iodine is poisonous if swallowed. Read and follow all safety guidelines in the Procedure. More information is available from the iodine [# Link Name="Chem_p044.1" Value="HtmlAnchor" HtmlText="Materials Safety Data Sheet" #].
Science Fair Project Idea
thumbnail Which type of orange juice has the most vitamin C? In this science project, you will learn how to measure the amount of vitamin C in a solution using an iodine titration method. You will compare the amount of vitamin C in three different types of orange juice: homemade, premium not-from-concentrate, and orange juice made from frozen concentrate. Which do you think will have the most vitamin C? Read more
Chem_p044
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- Less Details
Time Required Average (6-10 days)
Material Availability Titration equipment and supplies are needed. A kit is available from the [# Link Name="Chem_p044.7" Value="HtmlAnchor" #]. See the Materials tab for details.
Cost High ($100 - $150)
Safety Adult supervision required. Concentrated iodine is poisonous if swallowed. Read and follow all safety guidelines in the Procedure. More information is available from the iodine [# Link Name="Chem_p044.1" Value="HtmlAnchor" HtmlText="Materials Safety Data Sheet" #].
Science Fair Project Idea
Fruit is a strategy some plants use to attract animals to disperse seeds. The animals eat the fruit and disperse the seeds through the digestive system. To attract animals, fruit needs to ripen and develop an odor that acts as an attractant. How much more successful are ripe fruits at attracting animals? Try setting out an over and under ripe piece of fruit, and compare how many many insects are attracted to each fruit. How does ripening occur? You can do an experiment using a very ripe… Read more
PlantBio_p021
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Do not eat any fruit to which you have added chemicals. Use caution when using sharp knives or other kitchen equipment; adult supervision is recommended.
Science Fair 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.
Science Fair Project Idea
Chlorophyll is a natural pigment found in green plants. It is the primary pigment that absorbs light energy from the sun for photosynthesis. This energy is then used by the plant to synthesize glucose from carbon dioxide and water. Chlorophyll in the leaves of plants can be extracted and separated using chromatography. A good source of chlorophyll for an extraction is a dark green leafy vegetable like spinach. Rub a fresh spinach leaf on the bottom of a strip of filter paper. You can get a… Read more
PlantBio_p020
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Time Required Average (6-10 days)
Prerequisites None
Material Availability The page on [# ProjectGuide Name="Advanced.PaperChromatographyResources" Value="HtmlAnchor" #] lists the best papers and solvents for chromatography. The paper needs to be specially ordered and is available from the [# Link Name="PlantBio_p035.1" Value="HtmlAnchor" #].
Cost Low ($20 - $50)
Safety The solvents, like acetone or alcohol, for paper chromatography should be used in well-ventilated areas. Adult supervision is recommended.
Science Fair Project Idea
thumbnail 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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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Picture this situation: An elderly woman is rushed to the hospital complaining of severe abdominal pain, tinnitus, and lethargy. Suspecting a drug interaction, the emergency room doctor starts questioning her. The doctor learns that the woman takes no medicines except aspirin for her arthritis. Since she cannot swallow pills well she takes a powdered form of aspirin which she buys in bulk and keeps in a plastic container in her kitchen next to her baking goods. She had just finished a day of… Read more
Chem_p093
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- Less Details
Time Required Average (6-10 days)
Material Availability A kit containing specialty items is needed for this science project. See the Materials tab for more details.
Cost Average ($40 - $80)
Safety Wear disposable gloves when working with chemicals.
Science Fair Project Idea
Whipped egg whites are used in many sweet and savory recipes. They are used to add air into cake batters, meringues, and soufflés. Egg whites, also known as albumin are 15 percent protein dissolved into water. When egg whites are beaten or whipped, the protein chains unravel. This is called denaturation. The process of whipping egg whites adds air to the mixture, in addition to denaturing the proteins. The denatured proteins create bonds with each other and trap air bubbles within… Read more
FoodSci_p036
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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
Gluten is the substance in bread which, on a microscopic level, forms a rigid structure that traps the gases from the yeast, allowing the dough to rise. However, too much of the rigid gluten structure can make some doughs, like pie crust and pastry dough, too tough. For this reason, bakers often use different types of flour that naturally contain different amounts of gluten to make various types of dough. Do some background research about what gluten is, how it forms, and its role in baking.… Read more
FoodSci_p020
+ More Details
- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
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