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Chemistry Science Fair Project Ideas

Examples of Good Projects


Chemistry science fair projects can be fun.

Chemistry science fair projects can be fun.

Keith Weller, USDA

The best chemistry science fair project is one that answers a question or solves a problem. It can be challenging to come up with a project idea, but looking at a list of project ideas other people have done may stimulate a similar idea for you or you can take an idea and think of a new approach to the problem or question.


  • Can you use a black light to detect invisible spills or smelly stains in carpeting or elsewhere in the house? Can you predict what types of materials will glow under a black light?
  • Will chilling an onion before cutting it keep you from crying?
  • Does catnip repel cockroaches better than DEET?
  • What ratio of vinegar to baking soda produces the best chemical volcano eruption?
  • What fabric fiber results in the brightest tie-die?
  • What type of plastic wrap prevents evaporation the best?
  • What plastic wrap prevents oxidation the best?
  • Which brand of diaper absorbs the most liquid?
  • What percentage of an orange is water?
  • Are night insects attracted to lamps because of heat or light?
  • Can you make Jello using fresh pineapples instead of canned pineapples?
  • Do white candles burn at a different rate than colored candles?
  • Does the presence of detergent in water affect plant growth?
  • What contaminants can be detected in the air around us?
  • What type of car antifreeze is safest to the environment?
  • Do different brands of orange juice contain different levels of vitamin C?
  • Does the level of vitamin C in orange juice change over time?
  • Does the level of vitamin C in orange juice change after the container is opened?
  • Can a saturated solution of sodium chloride still dissolve Epsom salts?
  • How effective are natural mosquito repellents?
  • Does magnetism affect the growth of plants?
  • Do oranges gain or lose vitamin C after being picked?
  • How does the shape of an ice cube affect how quickly it melts?
  • How does the sugar concentration vary in different brands of apple juices?
  • Does storage temperature affect the pH of juice?
  • Does the presence of cigarette smoke affect the growth rate of plants?
  • Do different brands of popcorn leave different amounts of unpopped kernels?
  • How accurately do egg producers measure eggs?
  • How do differences in surfaces affect the adhesion of tape?

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