From the article: Free Science Fair Projects
You don't have to spend any money on a science project! There are many science projects you can do using materials you have on hand or by gathering free information. Here's your chance to share a free science project idea or to get a free project idea by reading what others have to say. What's your free science project idea? Share Your Idea
Volcano
- Go to dollar tree and buy a plain white piese of paper and plado also paint and you make the volcano with the paper first then get the plado then put it in the out side of the volcano and then you paint it from the outside and let it dry and put some baking soda in the volcano then let it dry about 12 minutes then put it in a box then there you go
- —Guest Aaliah Mata
Plants
- Can plants survive in different kinds of enviroments? If not, how will the enviroment prevent it from growing?
- —Guest Guest geologist
Which mouthwash is most efficient?
- Test out 4 different types of mouthwash and see which type kills the most bacteria.
- —Guest Areal
which battery is better to use
- get 4 types of batterie brands put them in a flashlight and leave them on and see how much time it takes for a batterie to die which brand dies faster
- —Guest kristina
Hydrogen peroxide decomposition
- Find the rate at which various compounds decompose H2O2. Record any patterns. Salts available: NaCl, NaBr, KCl (salt substitute), KI (iodine supplement), KOH (soap making), NaOH (soap making), LiOH (Li + H2O), Li2SO4 (LiOH + metal sulfate, filter and evaporate filtrate), CaCl2 (ice melt), MgSO4 (epsom salts), MgO (strong heating of MgSO4), Cr2O3 (chrome green pigment), CrCl3 (Cr2O3 in HCl, then evaporate), MnCl2 (MnO2 in HCl, filter and evaporate), FeCl2 (Fe in HCl, evaporate), CoCl2 (Drierite in water, evaporate), CuCl2 (Cu in H2O2 + HCl, evaporate), ZnSO4 (Zn in CuSO4, filter and evaporate), CdCl2 (Cd from NiCd button cell in HCl, evaporate), AlCl3 (Al in HCl, evaporate), etc. Be sure to research these reactions and have suitable labelled containers before producing these chemicals. Make sure you use an equal weight of each chemical. Process: Almost fill a test tube with H2O2. Mark the 1 mL line. Add chemical. Cork. Invert the tube. Wait until O2 gas reaches line. Record time.
- —Lanthanum
Free Body Science Project
- Determine the growth rate of your fingernails. Does eating a lot of protein really make them grow faster?
- —Guest Time on My Hands
Science Project Time
- Ask your classmates how much time they spent coming up with a science fair project idea. Graph and analyze this. How much time does a student spend on a science fair project?
- —Guest Tammy
Science Thrift
- Construct grocery lists that feed a family of 4 for a week for a certain amount of money (say $100). Compare the nutritional value of the lists in terms of calories, fat, protein, antioxidants, etc. Can you eat healthy on a budget?
- —SciGuy
Driest Part of the House
- Is humidity constant for all parts of a house? Pour water into several cups that are the same size. Draw a line to show the water level. Measure how the water level changes after 1 day, 2 days, 3 days, etc. Also, is there a big difference between evaporation during the day and evaporation at night?
- —Azareal
