Lab Report Topics: 90 Fresh Ideas [2025]

Lab reports, also known as experimental reports, can be the bane of existence even for the most gifted and curious students. Yes, they’re meant to teach the scientific method and promote attention to detail. Yet, a poorly selected topic can make the whole experience too boring to make a lasting impact on the students’ learning progress.

So, if you’re looking for fresh lab report ideas that students will love, you’ve come to the right place. Our lab report experts prepared 90 topics across physics, biology, earth science, and more. Keep reading to get inspired!

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How Do I Choose a Good Topic?

The topic you select can inspire students to pursue science and teach them the scientific method. Or, it can turn the whole experience into a drudgery that only discourages scientific thinking.

So, choose wisely. Here are five tips for selecting a good topic:

• Consider the curriculum standards. As creative as you may want to be, the topic has to fit into the framework set by the curriculum standards (e.g., your state’s guidelines).
• Make it interesting and relevant. Strive to match the topic with your students’ real-world experiences to make the assignment more engaging.
• Take your constraints into account. Consider the equipment and materials your students have access to, as well as safety measures and available time.
• Leave room for a custom approach. Ensure your topic can be easily adapted to students with different learning needs and abilities.
• Promote inquiry and initiative. Prioritize the topics that encourage students to take initiative in designing experiments or analyzing outcomes.

15 Top Lab Report Topics

Looking for the crème de la crème among lab report ideas? Here’s our selection of the best topics that make science fun for both high school and college students:

1. Measure the pH levels of various household substances using indicators.
2. Study the effects of surface area on the rate of chemical reactions.
3. Analyze the conservation of momentum in two-dimensional collisions.
4. Compare the biodiversity of two ecosystems using quadrat sampling.
5. Examine the electrical resistance of different wire materials and thicknesses.
6. Calculate the energy efficiency of different types of light bulbs.
7. Test the vitamin C content in juices using titration.
8. Identify metals using flame tests and emission spectra.
9. Construct a simple electric motor and measure its rotational speed.
10. Simulate tectonic plate movement and study its effects on landforms.
11. Compare the cooling rates of different liquids and relate them to specific heat.
12. Determine the focal length of lenses using the lens formula.
13. Test the effect of different insulators on heat retention.
14. Explore the formation and identification of unknown crystals.
15. Examine how color and material affect heat absorption from sunlight.

15 Biology Lab Report Topics

If you’ve come here looking for biology lab report ideas in particular, here are our 15 topics on everything from photosynthesis to bacterial growth:

1. Investigate the effect of light on the rate of photosynthesis in aquatic plants.
2. Measure the growth of yeast in sugar solutions of varying concentrations.
3. Study the effect of temperature on enzyme activity (e.g., catalase and hydrogen peroxide).
4. Compare the heart rate before and after physical activity.
5. Observe cell division under a microscope using onion root tips.
6. Test the effect of pH on bacterial growth.
7. Identify the stages of mitosis in prepared microscope slides.
8. Monitor transpiration rates in plants under different conditions.
9. Evaluate the effectiveness of antibiotics or disinfectants on bacterial cultures.
10. Investigate phototropism in seedlings.
11. Study the inheritance of traits using genetic crosses (e.g., Punnett squares).
12. Examine the microscopic structure of plant and animal cells.
13. Determine the effect of caffeine on the reaction time of test subjects.
14. Observe the feeding behavior of small invertebrates (e.g., earthworms).
15. Evaluate the effects of temperature on the permeability of cell membranes (e.g., beetroot).

15 Easy Lab Report Topics

Don’t want your lab report to be too time-consuming for one reason or another? Consider these 15 easy lab report ideas that won’t be too challenging but will feed students’ curiosity:

1. Study how soap affects surface tension in water.
2. Investigate how color affects heat absorption in sunlight.
3. Compare the strength of different bridge shapes using paper or straws.
4. Explore how shadows change during the day.
5. Measure the bounce height of balls made from different materials.
6. Study the effect of salt on the freezing point of water.
7. Observe how food coloring moves in hot and cold water.
8. Examine the effect of lemon juice on apple browning.
9. Compare the cleaning power of different dish soaps.
10. Investigate the speed of different paper airplane designs.
11. Explore the sound levels of various environments using a decibel app.
12. Determine which materials conduct electricity in a simple circuit.
13. Observe capillary action using colored water and paper towels.
14. Test the effectiveness of natural and commercial cleaning products.
15. Compare how long different batteries last in the same device.

15 Chemistry Lab Report Topics

If you’re in the market for chemistry lab report ideas, check out our chemistry experts’ 15 ideas for both organic and inorganic chemistry reports:

1. Investigate the effect of temperature on reaction rate using hydrochloric acid and sodium thiosulfate.
2. Determine the molar concentration of acetic acid in vinegar via titration.
3. Measure the pH levels of common household substances using indicators and pH meters.
4. Analyze the composition of a hydrate and determine its formula.
5. Study the impact of catalysts on the decomposition of hydrogen peroxide.
6. Observe the color changes in acid-base titrations using different indicators.
7. Compare the conductivity of ionic and covalent solutions.
8. Monitor the rate of a chemical reaction using gas collection methods.
9. Identify unknown metal ions through flame tests.
10. Examine the effects of concentration on chemical equilibrium (Le Chatelier’s Principle).
11. Separate the components of a mixture using chromatography.
12. Determine the empirical formula of a compound through combustion analysis.
13. Isolate caffeine from tea leaves using solvent extraction.
14. Analyze the effectiveness of antacids in neutralizing stomach acid.
15. Detect the presence of starch in food using iodine solution.

15 Physics Lab Report Topics

Whether you’re currently studying mechanics, electricity, magnetism, or thermodynamics, we have prepared 15 lab report ideas to spice up your curriculum:

1. Investigate Newton’s second law using a frictionless cart.
2. Measure the conservation of momentum in elastic and inelastic collisions.
3. Analyze projectile motion and range prediction.
4. Determine the acceleration due to gravity with a simple pendulum.
5. Measure the coefficient of friction on different surfaces.
6. Study Ohm’s law by measuring the current-voltage relationship in resistors.
7. Measure the internal resistance of a battery.
8. Study electromagnetic induction to see Faraday’s law in action.
9. Study capacitor charging and discharging in an RC circuit.
10. Map magnetic fields using a magnetic compass.
11. Measure the specific heat capacity of metals using calorimetry.
12. Study the thermal expansion of solids by conducting a linear expansion experiment.
13. Investigate the pressure-volume relationship in gases.
14. Measure the thermal conductivity of different materials.
15. Measure the speed of sound in air using resonance tubes.

15 Earth and Space Science Topics

From studying the soil at its different levels to looking up into the sky and focusing on stars and space objects, here are 15 lab report ideas for your geology, astronomy, or Earth science class:

1. Identify the soil composition and pH levels in a local environment.
2. Pinpoint the effects of acid rain on building materials.
3. Study the impact of human activity on groundwater contamination.
4. Measure local air quality using particulate sensors.
5. Simulate the greenhouse effect using model atmospheres.
6. Compare urban heat islands in different areas.
7. Model the impact of deforestation on local humidity levels.
8. Identify the impact of salinity on water density and ocean currents.
9. Compare plastic degradation in salt and fresh water.
10. Conduct an observational study on the phases of the moon over one month.
11. Measure and compare light pollution in urban and rural skies.
12. Simulate crater formation and calculate impact variables.
13. Create a model of the solar system to scale.
14. Identify the effects of solar activity on Earth’s magnetosphere.
15. Conduct spectral analysis of light from stars using diffraction gratings.

Final Thoughts

The topic you choose for your lab report can make or break student engagement and their learning progress. Choose a topic that’s too boring or difficult, and you probably won’t see a lot of top-notch lab reports submitted when the deadline is up.

While you can use any of our 90 topics as-is, we’d advise you to use them as a starting point in your brainstorming. The most interesting and engaging lab report topics tie directly with the students’ experiences or speak to their curiosity. So, ask yourself: which experiments would wow you?

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