The Most Popular of our Science Project Ideas

Experiments with Vitamin C are among the most popular of our science project ideas. Our Vitamin “C”itrus project is part of the 24 Hour Science Project package. It’s a cool chemistry project that is really impressive, but is really easy to do.

Most ideas for experiments involving chemistry require expensive and hard to find supplies. Experimenting with Vitamin C isn’t like that. In addition to foods containing Vitamin C, you will only need iodine, cornstarch, water, a pot, and a medicine dropper.

First you’ll extract juice from your fruits or vegetables, then you’ll make what is called a ‘titrating’ solution with cornstarch and water – a very easy process. You’ll add the titrating to your juices a drop at a time, and count the number of drops it takes until the solution turns blue. This will indicate how much Vitamin C (did you know it’s really called ascorbic acid?!) is in the juice you are testing. It’s a cool process that is fascinating to watch and do.

You can also use your own ideas to change our experiment up a bit. We give you instructions on how to do that in the expanded version of this experiment in our Middle School Science Project package.

We get notes all the time from kids who have used our Vitamin C science project ideas and have won their science fair.

“I enjoyed doing this experiment with my son. It was very interesting and it turned out real well.
You made it so easy for us. We are so glad we found you website!” – Shannon from Hawaii

Purchase our package of guides, and you’ll get step-by-step instructions for this project, a list of online and offline references, and photographs. You can enter your information into our charts, and the graph of your data is created automatically! Plus, you’ll get four more guides – so your science project ideas can really multiply.

Get your guide at 24 Hour Science Projects today!

P.S. Did I mention that this science project idea can be finished in 24 hours? In fact, you can start any all of the projects in our 24 Hour Science Project package today and be finished by this time tomorrow! Get your package NOW!

Cool Science Experiments for Homeschool – or Just the Home

If you’re looking for a cooler science experiment for the science fair, try 24 Hour Science Projects!

We’re always on the lookout for cool science experiments! Today’s post is really cool to do, and is written by a real rocket scientist – and mom – named Aurora Lipper.

Cool Science Experiment Using Soda and Mentos

By Aurora Lipper

There are generally two types of changes: physical change and chemical change. The Seltzer Pressure Rocket experiment, whereby you pop a film-roll canister off its lid by adding an effervescent tablet to water, is a chemical reaction. When a firecracker bursts, there is a loud noise and a release of energy- again, a chemical reaction. However, the online homeschool experiment I will teach you is quite explosive, yet it is a physical change.

A physical change is one that does not involve any chemical combination, and no new substance is formed. A chemical change is actually a chemical combination of two or more substances to form an entirely different substance. For example, chopping a block of wood into pieces is a physical change whereas burning a piece of wood is a chemical change.

Today I am going to show you how to build a mento-soda geyser, an experiment that I have included in the online homeschool curriculum that I have designed. This is an experiment that has become one of my favorites, and I have performed innumerable times. Here It Is! Remember to gather some of your friends to enjoy the geyser effect.

The Mento-Soda Geyser: Take a two liter soda (preferably Diet Coke) bottle and spill out some coke to leave an empty space at the top. Drill a hole in the cap of the bottle. Now take a roll of mentos mints and make holes in the center of each (about 8 to 10 mints). Take the help of an adult to drill the holes. Tie a knot to one end of a sewing thread and pass the thread through all the mints.

Pass this thread under the bottle cap and tape the free end of the string to the top of the cap in such a way that when you screw the cap onto the bottle the mints remain suspended in the empty space of the bottle just above the level of the soda. Your apparatus is now ready. Stand it securely in an open lawn so that it does not tip over. The best thing about online homeschool is that you can perform all your activities in and around your home.

Now when you are ready for the spectacular geyser display, remove the tape and let the mints fall into the soda. What do you see? The soda will be thrown into the air up to 10 to 15 feet high like a geyser. This will go on for about 15 to 20 seconds till most of the soda is spewed out.

How does this happen? In order to get the bubbly soda you enjoy, carbon dioxide is pumped into the liquid under high pressure. This carbon dioxide gas remains trapped in the liquid suspension and the bubbles are released when you pour the drink into a glass or when you shake the bottle.

There is enough tension between the molecules of the liquid to hold the bubbles confined. When you add the mints, this tension is broken by the sugar and gelatin in the mints. Carbon dioxide bubbles are released and get deposited in the tiny pores on the surface of the mint. These bubbles grow in size and are released out of the liquid. As there are many mints, the bubbles are multiplied and the pressure of the gas in the bottle begins to increase to such an extent that it escapes from the hole in the cap, taking with it the soda.

This is a physical change as no new substance is formed. Search through your online homeschool curriculum for lessons and examples on physical change and chemical change.

Want some more exciting stuff? Your next step is to download a free copy of the “Homeschool Parent’s Guide to Teaching Science” which is filled with great science experiments and activities at the link below.

A great free resource for really cool science experiments and activities is the Homeschool Science Experiment Guide.

Another good homeschool resource for science ideas, experiments and activities, is the homeschool science blog (just click on the Blog link). Definitely worth bookmarking.

Have Fun!

About the Author – Aurora Lipper has been teaching science to kids for over 10 years. She is also a mechanical engineer, university instructor, pilot, astronomer, a real live rocket scientist (You should see the lab in her basement!) and a mom. She has inspired thousands of kids with the fun and magic of science.

P.S. If you’re looking for cool science experiments for the science fair, try 24 Hour Science Projects!

Yeast Science Project – A Page and a Blog to ‘Catch

Yeast Science Project: science project about yeastIf you don’t know it already (which means you haven’t done The Yeast Beast project), yeast is in the air. If you set out a mixture of flour and water and a touch of sugar, this wild yeast will start to eat your flour mixture and ferment it. You’ll know when this happens when froth starts on top of the dough.

This is all explained very nicely in a boingboing blog post called Yeast? Where We’re Going, We Don’t Need Yeast. And – a warning – there’s not so nice pictures of fermenting yeast! To learn even more about it read this page on Exploratorium.

Yeast is just fascinating on a lot of levels. And a yeast science project is almost too easy to do. You can usually get anything you need at the supermarket and results are almost instantaneous. The fermentation of yeast is a chemical change, and there are tons of different demonstrations and experiments that you can use for your science fair.

Our “The Yeast Beast” project, for example, is advertised as a demonstration, but it can also be done as a science experiment, and instructions for doing it that way are in the guide.

Chemical Change Science Projects

Chemical Change Science Chemistry science projects involving a chemical change are often chosen by middle and high school students. Many kids like to do an experiment with a dramatic chemical change. When searching for a project, it can be difficult to find an experiment with chemicals that are easy to find, and easy to work with.

One popular project involving chemicals is an experiment determining which fruit or fruit juice has the most vitamin C. A simple indicator is made with cornstarch and iodine. Students (and parents) enjoy watching the chemical reaction that occurs along with titration, which is a fancy way of saying “putting in drops”. This project can be modified in several different ways, allowing your student’s creativity to shine. We get letters from many students telling us that this easy science project was submitted to the fair, and was chosen as a winner.

Another great science project involving a chemical change is watching what happens as yeast ‘eats’ sugar. In this project, warm water and yeast are placed in a bottle with a bit of sugar. A balloon is placed over the mouth of the bottle. As the yeast consumes the sugar, carbon dioxide is released, causing the balloon to blow up. This project is so much fun to watch that our kids did it over and over until we ran out of yeast.

Both of these projects can be done as demonstrations; they offer dramatic reactions that students will be able to observe immediately. Both science projects can also be experiments. They naturally lend themselves to a question, the formation of an hypothesis, and testing. The results can easily be graphed to form a conclusion.

Get step by step instructions for both of these projects at 24 Hour Science Projects. Along with a FREE Parent’s Guide to Science Fair Projects, we have all sorts of ideas for your scientist, starting at the most elementary, and working up to the more advanced chemical change science projects.

Dependent and Independent Variables – Figuring Out Which is Which

I got an email from a customer today. She was having trouble distinguishing the independent variable from the dependent. She’s doing the “Vitamin ‘C’itrus” project, in which you count the number of iodine indicator drops added to several samples of fruit juice, thus determining how much vitamin C is present in each sample.

Here’s my response: Remember, an Independent variable is what “I” change. So in this experiment, the independent variable would be the types of fruit. The dependent variable is what changes because of the independent variable (the type of fruit). And since the number of drops depends on the type of fruit, that would be the dependent variable.

Another example, from our guide:

Variables – When doing a science experiment, there are things that you, as the scientist, control to make sure your test results are dependable:
Independent Variable – The independent variable is the thing that you change in the experiment. All the other things in your experiment should stay the same. For example, in our experiment the independent variable is the type of fertilizer. We’ll use the same kind of pot, soil, and plant. We’ll have the plants get the same amount of light and stay in the same room at the same temperature. We’ll add the same amount of water. The only thing that will change is the kind of fertilizer.
Dependent Variable – The dependent variable is the thing that changes because of the independent variable. For us, that would be the height of the plant. The height of the plant changed because we changed the type of fertilizer.
Control – The Control is the group in which nothing changes at all. In the fertilizer experiment, that would be the group of plants that only was given water with no fertilizer.

For more information – including step by step instructions – on this project, check out 24 Hour Science Projects.


Using Iodine as an Indicator

In our “Vitamin C-itrus” project, students are shown how to make a Vitamin C indicator using corn starch and water. The instructions call for 2% or 10% iodine. Sometimes parents try to find the iodine at a science supply store. This isn’t necessary; regular antiseptic iodine will work, as long as it is not the decolorized type.

Using iodine as an indicator is an easy but fascinating way to show the presence of vitamin C.

If you’re interested in doing this project, visit “24 Hour Science Projects“.

Bread Mold Science Projects

Occasionally, we feature projects by other individuals. Here are some science project ideas on bread mold. Use them as a springboard for your science fair entry! But don’t forget to check out our project guides at 24 Hour Science Projects!

Bread Mold Science Fair Projects Ideas by Doug Nicholson

If you’re looking for an interesting science fair project, then you may want to read more about bread mold science fair projects that you can do. They are easy and inexpensive to do but also allow you to follow all the steps of the scientific method.

It helps to first understand a little about mold. Mold is another word for fungi whose bodies gather and congeal together to form cottony vegetative bodies. Not all mold is cottony, however. Types of slimy mold are more like amoeba than their cottony cousins and leave a moister, slicker mass on the molded surface. However when it comes to bread, you will most always see the drier, threadlike mold.

Mold commonly grows on bread faster in warm, dark, moist conditions. However, mold can grow in light, and some molds can even grow on frozen foods. Molds grow in varying conditions, at varying speeds, in every color you can think of.

Not just a disgusting addition to old food, mold can be beneficial in many ways. One of the most common ways mold is used positively is to make antibiotics such as penicillin. In 1928, Alexander Fleming accidentally discovered penicillin when he found mold growing on a discarded petri dish. The mold itself was not the miracle. Fleming discovered that the mold that had grown had killed the Staphylococcus aureus that he’d been growing in that particular petri dish. The rest is history!

Now that you know a little more about bread mold, you can use the ideas below to help you find potential bread mold science fair projects.

Does sodium have an effect on the growth of bread mold?

How and why does mold form on bread?

Is bread mold harmful to the human body if consumed? Why?

What are the optimal conditions for growing bread mold? Why?

Does light have an effect on the growth of bread mold? If so, what kind?

Do certain types of breads mold faster than others?

How to grow bread mold…

Take a cotton swab and collect some dust. Wipe the dust over the bread slices you want to experiment with. Place them in a bag with a few drops of water and seal the bag so the slices don’t dry out.

Now you know a little more about bread mold and the types of experiments you can do. You may have an idea of what you’d like to try as a project. Simply by asking questions about things that interest you, you can come up with great bread mold science fair projects that can be fun to do!

Doug Nicholson is a nuclear engineering technician, science hobbyist, and amateur inventor. Visit his site for lots more science fair projects ideas and articles.
Article Source: Free Articles ArticleSnatch Article Directory


Photo by Sean Ganann

Vitamin C – Using an Indicator

When you mix Iodine and Vitamin C (the scienctific name is ascorbic acid), something interesting happens; the solution turns blue for a bit, then returns to the color of the juice. Keep adding the iodine, however, and the mixture will turn a very inky dark blue color. Why is this? Here’s a kid friendly explanation!

Iodine and vitamin C like each other, and when they are put in the same container, they will combine. When you are adding the iodine to the juice and the starch mixture, as long as there is still vitamin C that has not been combined with the iodine, the color will stay the color of the juice, but after you reach the equivalence point- when you have added as much iodine as there is vitamin C – then the iodine starts combining with the cornstarch. When iodine combines with cornstarch it turns blue.

And if you’re doing our award winning experiment Vitamin “C”itrus, here’s a hint: the more iodine it takes, the more vitamin C there is.



Chemical Change Science Projects

As students head to middle and high school, they are expected to do more advanced science projects. Many kids like to do an experiment with a dramatic chemical change. We have a couple of chemical change science projects that our boys have done. These are slightly more advanced, yet still have easy to find supplies and are relatively easy to do.
Our most popular project involving chemicals is Vitamin “C”itrus. This experiment determines which fruit has the most vitamin C. A simple indicator is made, and students (and parents) enjoy watching the chemical reaction that occurs along with titration, which is a fancy way of saying “putting in drops”. This project can be modified in several different ways, allowing your student’s creativity to shine. We get letters from many students telling us that Vitamin “C”itrus was submitted to the fair, and was winning science project.
Another great science project involving a chemical change is our project The Yeast Beast. This project is so much fun to watch that our kids did it over and over until we ran out of yeast. Students watch what happens when yeast ‘eats’ sugar. This project is marketed as a demonstration project, but we also offer instructions to do it as an experiment.
Of course, for more great ideas, head to 24 Hour Science Projects. We have all sorts of ideas for your scientist, starting at the most elementary, and working up to the more advanced chemical change science projects.