Chemistry Science Fair Project Ideas

Topics and Experiments

Chemistry science fair projects can be fun as well as educational.
Chemistry science fair projects can be fun as well as educational. JW LTD / Getty Images

Are you looking for a chemistry or interdisciplinary science fair project idea? Here's an enormous list of science fair project ideas, groups according to topic and also according to educational level.

Chemistry Science Fair Project Ideas by Topic

Acids, Bases & pH - These are chemistry projects relating to acidity and alkalinity, mostly aimed at the middle school and high school levels.
Caffeine - Is coffee or tea your thing?

These projects relate mostly to experiments with caffeinated beverages, including energy drinks.
Crystals - Crystals can be considered geology, physical science, or chemistry. Topics range in level from grade school to college.
Environmental Science - Environmental science projects cover ecology, assessing environmental health, and finding ways to solve problems.
Fire, Candles & Combustion - Explore combustion science. Because fire is involved, these projects are best for middle school and higher grade levels.
Food & Cooking Chemistry - There is a lot of science involving food, plus it's a research subject everyone can access.
General Chemistry - This is a broad collection of different types of science fair projects relating to chemistry.
Green Chemistry - Green chemistry seeks to minimize the environmental impact of chemistry. It's a good topic for middle and high school students.
Household Project Testing - Researching products and understanding how people select them is an interesting science fair topic for students who might not ordinarily enjoy science.


Magnets and Magnetism - Explore magnetism and compare different types of magnets with these project ideas.
Materials - Materials science can relate to engineering, geology, or chemistry. There are even biological materials that can be used for projects.
Plant & Soil Chemistry - Plant and soil science projects often require a bit more time than other projects, but all students have access to the materials.


Plastics & Polymers - Plastics and polymers aren't as complicated and confusing as you might think. These projects may be considered a branch of chemistry.
Pollution - Explore sources of pollution and different ways to prevent or control it.
Salt & Sugar - Salt and sugar are two ingredients anyone should be able to find. Do you think you don't have the materials for a science fair project? You do!
Sports Physics & Chemistry - Sports science projects may be attractive to students who don't see how science is practical in everyday life. These projects may be of particular interest to athletes.

Science Fair Projects by Grade Level

Quick Look at Project Ideas by Educational Level
Elementary School Science Fair Projects
Middle School Science Fair Projects
High School Science Fair Projects
College Science Fair Projects
10th Grade Science Fair Projects
9th Grade Science Fair Projects
8th Grade Science Fair Projects
7th Grade Science Fair Projects
6th Grade Science Fair Projects
5th Grade Science Fair Projects
4th Grade Science Fair Projects
3rd Grade Science Fair Projects

Tips for Finding a Good Project Idea

  • Write out your project idea in the form of a hypothesis for the scientific method. If you can, write out 5-10 hypothesis statements. Which is easiest to test? Which one makes the most sense.
  • The ideal science fair project asks a question you can answer or solves a problem.
  • Keep in mind how much time you have to complete the project. Don't select a science project that takes months to complete if you only have a few weeks. Remember, it takes time to analyze the data and prepare the report. It's also possible your experiment might not work out as planned. A good rule of thumb is to choose an idea that takes less than half the total time you have.
  • Don't discount an idea just because it doesn't seem to fit your educational level. Many projects can be made simpler or more complex.
  • Keep your budget and materials in mind. Great science doesn't have to cost a lot. Also, some materials might not be readily available where you live.
  • Keep the season in mind. For example, while a crystal-growing project might work well under dry winter conditions, it might be hard to get crystals to grow during a humid rainy season. A project involving seed germination may work better in the spring and summer (when seeds are fresh and sunlight is favorable) than in late autumn or winter.
  • Don't be afraid to ask for help. Parents, teachers, and other students can help you fine-tune a science fair project idea.
  • Follow rules and regulations. If you aren't allowed to use live animals, don't choose an animal project. If you won't have access to electricity, don't pick a project that requires an outlet. A bit of planning can save you from disappointment.