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Others Like “Spaces Between Water Molecules: When 1 + 1 < 2”

Project Idea
A solution consists of a solute dissolved in a solvent. A solution is saturated when no additional solute will dissolve in it. You'll need a gram balance, a 100 ml graduated cylinder, three beakers or glass jars, three saucers, water, 50 g non-iodized salt (NaCl), 50 g Epsom salts (MgSO4) and 250 g sugar (sucrose). Method 1: Measure 100 ml water and pour into an empty beaker or jar. Weigh out the suggested amount of the solute to be tested. Add a small amount of the solute to the water and… Read more
Chem_p037
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Time Required Average (6-10 days)
Project Idea
Many essential chemical reactions and natural biochemical processes occur in liquid solutions, so understanding the chemical properties of liquid solutions is fundamentally important. This project asks the basic question, how much of a substance can dissolve in water, for three different substances: ordinary table salt, Epsom salts, and sugar. Read more
Chem_p050
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Project Idea
thumbnail Cake, cookies, pie, ice cream, hot chocolate, lemonade…Yum! What do all these delicious treats have in common? Sugar. In addition to providing sweetness, sugar adds bulk, flavor, and structure to foods. But is it necessary to add sugar to achieve sweetness? Can the same sweetness be achieved using sugar substitutes like artificial or natural sweeteners? In this project, you will test sugar and sugar substitutes and compare the sweetness of each in relation to sugar. In the end, your day will be… Read more
FoodSci_p016
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Some specialty items needed,see Materials List for details.
Cost Average ($50 - $100)
Safety No issues
Project Idea
thumbnail There is nothing quite like the smell of fresh-baked bread to make your mouth water! As any baker can tell you, you cannot bake bread without yeast. Yeast actually eat sugar so that they can reproduce and make more yeast, and make bread dough rise. But can they use sugar substitutes to do this? In this science project you will get to investigate how well yeast grow with sugar substitutes as a food source. Pass the butter, please! Read more
MicroBio_p005
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
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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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" #].
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 Science Buddies Store. 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" #].
Project Idea
thumbnail Making your own bubble solution is fun, but sometimes the bubbles don't seem to work as well as the solutions you buy in the store. In this experiment you can test if adding corn syrup or glycerin to your bubble solution will make it just as good as the stuff you can buy. This experiment will have you blowing bubbles! Read more
Chem_p025
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Project Idea
thumbnail Have you ever mixed together salt and sand? It is fun to see how all of those tiny grains of salt and sand mix together! But what if you had to separate them out again? Do you have nightmares of tiny tweezers, a magnifying glass, and hours spent picking grains of salt and sand apart? Do not be afraid, there is another way! In this chemistry science project you will use the differences in solubility between salt and sand to find out the simple "solution" to this problem. Read more
Chem_p016
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Time Required Very Short (≤ 1 day)
Prerequisites none
Material Availability Readily available
Cost Very Low (under $20)
Safety This science project requires adult supervision. Be careful and have adult supervision when using the stove and oven, and handling the boiling water
Project Idea
thumbnail In this biology science fair project, you will observe how the Physarum polycephalum (P. polycephalum) organism responds to various amounts of glucose. P. polycephalum is easy to grow in a petri dish and responds in complex ways to its environment. Will it grow toward the chemical as it looks for a meal, or will it flee, trying to avoid further contact? Try this science fair project to learn more about chemotaxis in the fascinating Physarum polycephalum. Read more
MicroBio_p028
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Time Required Long (2-4 weeks)
Prerequisites An introductory course in chemistry would be useful.
Material Availability You will need to order the "Chemotaxis in Physarum" kit online; see the Materials and Equipment list for details. This item may have to be ordered by your teacher.
Cost Average ($50 - $100)
Safety Be careful working with sharp blades. Adult supervision is recommended.
Project Idea
thumbnail 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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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 plese 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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