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

Gummy bear volcano

Gummy bear volcano

Gummy bears vigorously burn in a test-tube

Sand snake

Sand snake

Sugar and baking soda make a black snake.

Explosion of nitrogen triiodide

Explosion of nitrogen triiodide

Special substance explodes on hitting

Сhemical сhameleon

Сhemical сhameleon

Colours change from purple to blue, green and orange

Ammonia fountain

Ammonia fountain

Water absorbs ammonia and fills the flask

Egyptian night

Egyptian night

After mixing two colorless solutions nothing happens; however after a few seconds the colourless mixture suddenly turns dark blue

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Most dangerous experiments

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

Gummy bear volcano

Gummy bear volcano

Gummy bears vigorously burn in a test-tube

Barking dog

Barking dog

The wave of blue light spreads along the tube filled with carbon disulphide and nitrogen monoxide gases and is accompanied with a barking sound

Exploding bubbles of hydrogen

Exploding bubbles of hydrogen

Soap bubble becomes a fireball.

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Difficult experiments

Electrolytic preparation of sodium amalgam

Electrolytic preparation of sodium amalgam

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

Arsenic-based pigments

Arsenic-based pigments

Beautifully colored precipitates are formed from solutions

Flag in a test tube

Flag in a test tube

The two-layer liquid divides into three layers and changes its color.

Electrolytic Bromine

Electrolytic Bromine

Preparation of one of the most interesting elements - bromine by its precipitation in yellow water solution prepared with electrolysis

Fluorescent Dye

Fluorescent Dye

Liquid light is prepared!

Hydrogen chloride fountain

Hydrogen chloride fountain

Water quickly flows into the flask and changes color

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Easy experiments

Invisible inks using iron (III) chloride

Invisible inks using iron (III) chloride

Invisible letterings show after adding a brown solution

Lead-acid storage battery

Lead-acid storage battery

How to make a lead-acid storage battery

Qualitative reaction on phosphate ion

Qualitative reaction on phosphate ion

Presence of phosphate ions causes the formation of a yellow precipitate.

Respiration and carbon dioxide test

Respiration and carbon dioxide test

The solution turns milky when exhaled air is bubbled through it.

Reaction in a Bag

Reaction in a Bag

A ziplock bag is inflated by mixing three substances in it

Color Changing Flowers

Color Changing Flowers

Flowers change their initial color under action of a volatile liquid.

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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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