science fair projects

Ideas For Chemistry Science Fair Projects

Chemistry Science Fair Projects

Here you'll find some ideas for chemistry science fair projects you can easily do at home. Your project doesn't have to be complicated and it can even be fun. It should though show one or more of the principles of chemistry and it should follow the scientific method of investigation. 

What Is Chemistry?

Chemistry is the branch of science that studies the interaction of atoms to form molecules and of molecules and atoms to form compounds. Compounds are formed when two different atoms or molecules combine chemically. For example table salt is formed when an atom of sodium combines with an atom of chlorine. The chemical representation is NACL.

Chemistry is a big field of study with endless possibilities to develop some interesting chemistry science fair projects. Almost everything involves chemistry in one way or another. Of all the products on the market most of them required the application of chemistry in their manufacture.

Look around at some of the products in your home and imagine how they were made. I'm betting you can't find any that didn't involve some type of chemical reaction. Perfumes, soaps, shampoos, bleaches, paints, medicines of all types...chemistry was used to make them all. Plastics, steel, foam rubber, synthetic fabrics...chemistry again used to make them all.

Our bodies are in fact chemical factories. Millions of chemical reactions(biochemical more appropriately) are going on constantly. Some break down the foods we eat to provide energy for our cells. Other reactions make proteins and enzymes to maintain our body functions. 

Some Ideas For Chemistry Science Fair Projects

  1. Check for lead. The EPA says lead can be found in 50% of the homes in the United States. Test the paint in your house for lead. Older houses were painted with lead based paints. Check your dishes, coffee mugs, bowls, etc. Ceramic glazes used to contain lead compounds. Imported toys of different types may also contain lead. And finally test for lead in the soil near your home.
  2. Do water tests. Check the dissolved oxygen level, chlorides, phosphates, and calcium levels in your tap water.
  3. Test common foods for sugars, starches, iron, fats, and proteins.
  4. Check the air in your area for particles, smoke, chemical gases, carbon dioxide levels.
  5. Do soil tests for potassium, nitrogen, phosphate, and pH levels.
  6. Simple experiments in your kitchen. Make super size bubbles, rock candy, soda pop.
  7. Set up some experiments and do an electrolysis project.
  8. Do a project involving electroplating of metals.
  9. Test the pH levels of products like soaps and shampoos. Are pH balanced shampoos really neutral.
  10. Do a project to find out which household chemicals cause ferrous materials to rust or corrode the most. Test vinegar, table salt, liquid bleach, laundry detergent, sugar, etc.
  11. Be a CSI or crime scene investigator and demonstrate some of the methods you see on the crime scene tv shows.

These are just a few ideas, and the possibilities for chemistry science fair projects are only limited by your imagination.

Using basic theory and this calculator below, you can quickly find the answers to your chemistry equations.

Fill in any two of the three text fields in either the empirical formula or the molarity forms. (Make sure at least one of the three text fields is empty.)

Empirical Formula
Number of Moles of atoms (n) :
Mass of Element (m) :
Relative Atomic Mass (Ar) :
Concentration of Solute (M) :
Amount of Solute (n) :
Volume of Solution (L) :


Titration Chemistry Science Fair Projects Experiment To Find Vitamin C Content In Apple Juice

Student Question: I need to work out the method to find the concentration of Vitamin C in apple juice.


We found this method for measuring Vitamin C on the Internet from the University of Michigan. One gives a qualitative method and the other a quantitative method.


Vitamin C in Fruit Juices Recommended Age Level: High School


In this experiment we will determine the amount of vitamin C (ascorbic acid) in different fruit juices by titration of the juice with a solution of iodine. The iodine reacts rapidly with the vitamin C. If you have a juice you would like to analyze, bring about 125 ml to lab. Compare at least two juices.


Preparation of the Sample:

Add about 1 g of oxalic acid (to stabilize the ascorbic acid) to about 100 ml of the juice in a 250 ml beaker.

The Titration: Rinse your clean 50 ml burette with a little iodine solution and fill it with the iodine solution using a funnel.

Drain it to just below the first volume mark. Be certain that there are no air bubbles in the tip.

Read the initial volume to the nearest 0.01 ml.

Pipette 25.0 ml of your filtered fruit juice into a clean Erlenmeyer flask.

Add a little (the tip of your spatula) of the thyodene indicator.

Add iodine solution from the burette with constant swirling until a definite color change is observed throughout the solution.

Sometimes the color will fade on standing, so take the first time it changes as your endpoint.

Record the final level of your iodine solution. Repeat this section once or twice as time permits.


One ml of the iodine solution is equivalent to 0.30 mg of vitamin C.

Calculate the number of milligrams of vitamin C in 25 ml of your sample by multiplying the volume in ml of iodine solution you used by the vitamin C equivalent of the iodine solution.

Record this in your notebook for each of your trials.

Calculate the average value, as well, and record that.

Do at least two trials for each juice.

For your conclusion compare at least two different juices.

Wastes: All of the reagents and wastes in this experiment can be put down the drain with the water running.

Good luck with your chemistry science fair projects.