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Chemistry experiments and science fair projects

Hands-on chemistry projects covering reactions, solutions, acids and bases you can watch happen. Each one lists the exact materials, the time and cost involved, the variables to control and a data table you can fill in — so it works as a class activity or as a full science fair entry.

35 published projects in this collection

Choosing a chemistry project

Chemistry projects need a little more care about materials and ventilation, so every project here lists its hazards, protective equipment and whether an adult needs to be present.

What every project includes

A research question and hypothesis, an independent and dependent variable, the variables you hold constant, a materials list with costs, numbered steps, safety guidance and a reproducibility score based on how completely the method is documented.

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Preparing for a fair? Read the science fair guide or record your data in the lab.

Questions, answered

Are these Chemistry projects suitable for a science fair?

Yes. Each one is a testable question with something measurable, and the project workspace walks you through the write-up judges expect: question, hypothesis, variables, procedure, results and conclusion.

What does each project include?

A research question and hypothesis, the independent and dependent variables, the variables to hold constant, a full materials list with costs, numbered steps, safety guidance and a data table you can fill in as you test.

How much do these projects cost, and how long do they take?

It varies, so every project page states a cost estimate and a realistic time estimate up front. You can rule a project in or out before buying anything.

Do these projects need adult supervision?

Some do. Every project lists its hazards and whether adult supervision is required in an at-a-glance panel on its page, so you can check suitability before you start.