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.

more popular experiments view all popular experiments

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

more new experiments view all new experiments

Coolest experiments

Silane from magnesium silicide

Silane from magnesium silicide

Freshly prepared silane reacts vigorously with oxygen

Ammonia fountain

Ammonia fountain

Water absorbs ammonia and fills the flask

Golden rain

Golden rain

Beautiful crystals of bright yellow colour are formed under cooling.

Fire storm

Fire storm

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

Blue bottle

Blue bottle

Does the solution become colorless? Shake it to make blue again!

Exploding bubbles of hydrogen

Exploding bubbles of hydrogen

Soap bubble becomes a fireball.

more cool experiments view all cool experiments

Most dangerous experiments

Gummy bear volcano

Gummy bear volcano

Gummy bears vigorously burn in a test-tube

Exploding bubbles of hydrogen

Exploding bubbles of hydrogen

Soap bubble becomes a fireball.

Silane from magnesium silicide

Silane from magnesium silicide

Freshly prepared silane reacts vigorously with oxygen

Fire storm

Fire storm

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

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

more dangerous experiments view all dangerous experiments

Difficult experiments

Potassium chlorate from sodium chloride by electrolysis

Potassium chlorate from sodium chloride by electrolysis

Obtaining potassium chlorate from sodium chloride using electrolysis

Fluorescent Dye

Fluorescent Dye

Liquid light is prepared!

Hydrogen chloride fountain

Hydrogen chloride fountain

Water quickly flows into the flask and changes color

Fire storm

Fire storm

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

Reaction in air bags

Reaction in air bags

Generation of large amounts of gas under thermal or mechanical influence on sodium azide

Electrolytic Bromine

Electrolytic Bromine

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

more difficult experiments view all difficult experiments

Easy experiments

Sparks from Rusty Iron Balls

Sparks from Rusty Iron Balls

When two balls strike white sparks fly.

Lava Lamp

Lava Lamp

Make your own lava lamp at home!

Acetone flashlight

Acetone flashlight

Copper wire glows in acetone vapor

Respiration and carbon dioxide test

Respiration and carbon dioxide test

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

Extracting limonene using dry ice

Extracting limonene using dry ice

Some oil is extracted from orange peel by dry ice.

Exploding bubbles of hydrogen

Exploding bubbles of hydrogen

Soap bubble becomes a fireball.

more easy experiments view all easy experiments

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

load more experiments view all experiments

Practicum is the encyclopedia of chemistry experiments.

Practicum is an online database of chemistry experiments that everyone can edit. If you know any chemistry demonstration not listed here you can add it.

Add experiment

Become a member of our chemistry community. Add cool chemistry experiments you know

Add experiment

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.

Anyone can edit MEL Practicum by adding new experiments or editing descriptions of existing experiments. All edits are reviewed by professional chemists.

Your feedback is highly appreciated. Feel free to send us an email: support@melscience.com, or simply use the form provided.