Topics for classroom chemistry science fair experiments

Classroom Chemistry Science Fair Experiments

Doing classroom chemistry science fair experiments are a fun way to work together as a class to solve a problem. These class projects can look at big science issues like global warming, or simple science concepts like solubility. No matter what your class decides to do, remember that the project is a team effort and that all students need to participate equally.

The first option that you have for a whole class science fair experiment is to explore simple subjects like solubility. A fun project is to use solubility to separate solutions into pure elements. One experiment is to use solubility to separate salt from a salt and pepper mixture. This experiment will steep the salt and pepper crystals in boiling water. Since salt is water soluble and pepper isn’t you will be able to strain out the pepper crystals with a coffee filter.

Another option that you have for classroom science fair projects is to experiment with temperature. Chemistry science experiments that you can complete include using water of different temperatures to dissolve Alka-Seltzer (R) tablets. Your job will be to determine if the temperature of the water affects how fast the tablets dissolve or react to the water. You can get the whole class involved in this experiment by assigning one temperature of water to each team of students. The students can then combine your results and work together to analyze your data.



Magnets are so much fun! Kids can have a real hands-on experience going around the room and seeing what is magnetic. For the younger students you can give them a picture bingo card with pictures of objects that will and will not attract magnets. The first one to get “Magnetic Bingo” can win a special privilege. For the older children, they can draw their own images on a card or make a chart. To demonstrate magnets here are two classroom demo kits.

If you are interested in chemistry science fair projects then consider chemical reaction experiments. These experiments can look at just about any type of chemical reaction you are interested in from reactions that cause small scale explosions to reactions that cause a physical change to the test materials.

To get the whole class involved in these experiments you can split your class up into teams and have each team complete the experiment. Then you can compare the results that each team got. Explain why the results were the same or different.

For a simple project that the whole class can complete together consider candy chromatography. For this class experiment you can give each student a different type of candy, for example, chocolate, M&Ms, Reece’s Pieces, etc. Each student will then moisten the candy and rub it on a piece of chromatography paper. As the colored fluid is drawn up the chromatography paper you will notice what colors were used to make up the candy’s shell. Compare the different die combinations used to create similar colors by different candy companies.

Doing a single classroom chemistry science fair experiments is not an easy task. However, if you are successful at doing this, you will not only make science more interesting for more kids, but you will also find that you can tackle more complex science concepts when more people are involved. This will teach students the importance of collaboration in the professional realm of science. Have fun with your experiments!

If you need any lesson plans go to the EPA site.

13 thoughts on “Topics for classroom chemistry science fair experiments

  1. Beauty Tips says:

    if you are interested in medicine and in earth science then you can examine how common minerals found in the Earth’s crust can be used for medical purposes like treating diseases and improving cellular functions.

  2. stacie@Green Houses says:

    I like the sound of the project with the sweets but it’s a little bit of a waste isn’t it! We don’t have science fairs like this over here but if we did it would encourage the children even more to enjoy science.

  3. Jazzie@bridesmaid gift says:

    There are a lot of ways to make class experiments depending on what year level the students are in. I must agree on magnet experiments for most children especially when the class is of large number. It’s safe and requires less supervision.

  4. Mark Landry@Particle Size Analyser says:

    Lots of awesome ideas! I’ve seen plenty of magnet and solubility kids experiments (and they tend to play more than pay attention to these) but the chromatography paper and explosion experiments sound like winners. Microscopes are another thing that fascinates children in a much more learning oriented way!

  5. daniel says:

    Another option for a classroom science fair project is to experiment with temperature. Chemistry science experiments that you can complete include using water of different temperatures to dissolve Alka-Seltzer (R) tablets.

    The kids can determine if the temperature of the water affects how fast the tablets dissolve or react to the water.

    The whole class can become involved in this experiment by assigning one temperature of water to each team of students. The students can then compare their results and work together to analyze your data.

  6. green house spares says:

    My son’s class did a fantastic chemistry experiment on the schools open evening where they put mints into a bottle of cola! Really blows up so you have to make sure everyone stands well back, but great fun.

  7. monikaSEO@college chemistry tutoring says:

    Another option is to measure the viscosity of liquid. I think whole class would enjoy this experiment.

  8. Liza Brown (career advice expert)@job search says:

    Another option is watching Brownian motion or the phenomenon of diffusion. I remember we practised this during the classes with our teacher and it was a very interesting job.

  9. monika@Sales Training New York says:

    I LOVED SCIENCE EXPERIMENTS IN MY SCHOOLDAYS.I DID MANY EXPERIMENTS BUT ONE OF MY FAVORITE IS ARCHIMEDES PRINCIPLE.IT IS REAL LIFE EXAMPLE AND I HOPE KIDS LOVE TO DO THIS.

  10. Aiping Fulepp says:

    Listening to music is one of the most enjoyable and effective stress reduction techniques. Stress is synonymous with low frequency vibrations and energy levels.

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