Most popular experiments

Starch and iodine reaction

Starch and iodine reaction

When a few drops of colorless solution are added to another colorless solution it suddenly turns dark-blue.

Sublimation of iodine

Sublimation of iodine

Crystals become a vapor!

Preparation of hydrogen sulphide and its properties

Preparation of hydrogen sulphide and its properties

The gas with rotten egg smell is liberated and dissolves in water.

Soap Test for Water Hardness

Soap Test for Water Hardness

Different samples of water give various amount of foam and some turn cloudy.

Reaction of Copper with Nitric Acid

Reaction of Copper with Nitric Acid

Water fountain turns a green solution to a beautiful blue color and makes the brown gas disappear.

A solid-solid reaction lead nitrate and potassium iodide

A solid-solid reaction lead nitrate and potassium iodide

When two white solid substances are combined together the resulting mixture is yellow.

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New experiments

Ammonia fountain

Ammonia fountain

Water absorbs ammonia and fills the flask

Instant snow

Instant snow

A huge volume of water is converted into powder

Snowfall in a vial

Snowfall in a vial

Have you ever seen an ammonia chloride snowflake?

Silver grows on copper

Silver grows on copper

Silver crystals grow on a copper wire

Ferrocerium firework

Ferrocerium firework

Red hot ferrocerium rod gives many sparks

Burning properties of gunpowder

Burning properties of gunpowder

Various types of gunpowder burn differently

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Coolest experiments

Tin dendrite

Tin dendrite

Real time metal crystal growing

Whoosh Bottle

Whoosh Bottle

Alcohol vapors burn with dancing flame and “whoosh” sound.

Gummy bear volcano

Gummy bear volcano

Gummy bears vigorously burn in a test-tube

Hot ice

Hot ice

When crystals touch the liquid surface it rapidly starts freezing.

Silane from magnesium silicide

Silane from magnesium silicide

Freshly prepared silane reacts vigorously with oxygen

Golden rain

Golden rain

Beautiful crystals of bright yellow colour are formed under cooling.

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Most dangerous experiments

Exploding bubbles of hydrogen

Exploding bubbles of hydrogen

Soap bubble becomes a fireball.

Fire storm

Fire storm

Scattering sparks of fire occur in the flask after adding hot chromium (III) oxide powder

Gummy bear volcano

Gummy bear volcano

Gummy bears vigorously burn in a test-tube

Silane from magnesium silicide

Silane from magnesium silicide

Freshly prepared silane reacts vigorously with oxygen

Pharaoh's snake

Pharaoh's snake

A solid substance burns producing a snake-like mass.

Explosion of nitrogen triiodide

Explosion of nitrogen triiodide

Special substance explodes on hitting

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Difficult experiments

Fluorescent oscillating reaction

Fluorescent oscillating reaction

A mixture of three solutions periodically changes color and glows in UV

Sulfuric acid from copper sulfate

Sulfuric acid from copper sulfate

Preparation of sulfuric acid by electrolysis using copper sulfate

Potassium chlorate from sodium chloride by electrolysis

Potassium chlorate from sodium chloride by electrolysis

Obtaining potassium chlorate from sodium chloride using electrolysis

Electrolytic preparation of sodium amalgam

Electrolytic preparation of sodium amalgam

Obtainment of substance at the bottom layer by electrolysis, which reacts with water

Fire storm

Fire storm

Scattering sparks of fire occur in the flask after adding hot chromium (III) oxide powder

Fluorescent Dye

Fluorescent Dye

Liquid light is prepared!

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Easy experiments

Quantitative reaction on glycerol

Quantitative reaction on glycerol

Solution first turns blue and then dark blue.

Armstrong's mixture explosion

Armstrong's mixture explosion

Mixture explosion caused by hammer impact

Magnesium burns in air

Magnesium burns in air

Demonstration of magnesium burning in air

Carbon from a candle

Carbon from a candle

Carbon obtained from a candle

Invisible ink from copper sulfate and ammonia

Invisible ink from copper sulfate and ammonia

Copper sulfate solution is used as an invisible ink.

Qualitative reaction to halide ions

Qualitative reaction to halide ions

Presence of halide ions causes the formation of curdy precipitates.

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All experiments

Acetone flashlight

Acetone flashlight

Copper wire glows in acetone vapor

Acetylene & Oxygen Explosion

Acetylene & Oxygen Explosion

Explosion of the acetylene-oxygen mixture

Acid-Base titration

Acid-Base titration

One colorless liquid is added gradually to another colorless liquid, and at one moment the solution becomes pink

Alcohols and chromium (III) oxide

Alcohols and chromium (III) oxide

Demonstration of the burning of alcohols in presence of chromium (III) oxide

Alkali metals and air

Alkali metals and air

Demonstration of the behavior of alkali metals in air

Alum from soda cans

Alum from soda cans

Obtaining alum from soda cans

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MEL Practicum is an online encyclopedia of chemistry experiments and demonstrations. All experiments are categorized by their level of difficulty, by reagent used and their type. For each experiment, you will find multiple videos, step-by-step instructions, reagents used, safety information, basic science background, links to other online resources, and other related information.

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