🧪 Science experiments for teens: 3 cool ideas to spark curiosity

Teenagers are ready to dive deeper into scientific thinking: asking questions, forming hypotheses, observing carefully and analyzing results. These science experiments for teens are designed to turn science into action—engaging, hands-on and full of wow moments.

🌡️ 1. Endothermic Reaction: Instant Cold!

Materials:

• Baking soda

• Ammonium chloride (or table salt as a safe alternative)

• Water

• Clear glass or cup

• Thermometer (optional)

Steps:

1. Mix 100 ml of water with 2 tablespoons of baking soda and 1 tablespoon of ammonium chloride.

2. Stir well and observe how the temperature drops.

3. Use a thermometer to track the change, if available.

What does it teach?
Endothermic reactions, energy transfer, and the science of chemical processes that absorb heat.

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🔬 2. Extracting Strawberry DNA

Materials:

• 1 ripe strawberry

• Water + salt + dish soap

• Cup

• Coffee filter or strainer

• Cold rubbing alcohol (70% or higher)

• Ziplock bag and toothpick

Steps:

1. Mash the strawberry in the bag with the salt-water-soap mix.

2. Filter the mixture into a cup.

3. Slowly pour in the alcohol along the side.

4. After a few minutes, white strands of DNA will appear.

What does it teach?
DNA structure, cell biology, and basic lab techniques.

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🔥 3. Burning Sugar: The Black Snake

Materials:

• Sugar

• Baking soda

• Rubbing alcohol

• Ceramic or metal plate

• Lighter or match

• (Always supervised by an adult)

Steps:

1. Mix 2 tablespoons of sugar with 1 of baking soda.

2. Pour the mixture in a mound on the plate and add a little alcohol.

3. Carefully light the mix and watch the black “snake” grow.

What does it teach?
Combustion, gas release, and thermal decomposition. Science meets visual impact.

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🧠 Science in Action

These science experiments for teens go beyond the textbook. They encourage observation, teamwork and deeper understanding of biology, chemistry and physics.

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📌 Safety Tips:

• Always supervise experiments involving fire or chemicals.

• Wear goggles if possible.

• Work in a well-ventilated area for alcohol-based reactions.

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