Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive
 

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Latest Articles

  • Use of diamonds

    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...

  • Diamonds Are Forever

    Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?

  • The most expensive metal in the world

    Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

  • Interesting facts about metals

    Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

  • What are Compound Microscopes?

    Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...



Most Popular

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

Allotropic Modifications (Allotropes)

Different forms of the same element in the same physical state.

Hydrometer

A device used to measure the densities of liquids and solutions.

Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Cis-

The prefix used to indicate that groups are located on the same side of a bon about which rotation is restricted.

Paramagnetism

Attraction toward a magnetic field, stronger than diamagnetism, but still weak compared to ferromagnetism.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Electromagnetic Radiation

Energy that is propagated by means of electric and magnetic fields that oscillate in directions perpendicular to the direction of travel of the energy.

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).