Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive
 

The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.

Latest Articles

  • Gas of rotten eggs

    If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

  • Chemistry of the sky

    Chemistry can teach us about the composition of celestial bodies and determine their age.

  • Why do copper products change color, and what is the name of the process?

    Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.

  • 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...

  • Features of the Scanning Tunneling Microscope

    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...



Most Popular

Dispersed Phase

The solute-like species in a colloid.

Matter

Anything that has mass and occupies space.

Nitrogen Cycle

The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.

 

Ferromagnetism

The ability of a substance to become permanently magnetized by exposure to an external magnetic field.

Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Capillary

A tube having a very small inside diameter.

Mass

A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

Nuclear Binding Energy

Energy equivalent of the mass deficiency, energy released in the formation of an atom from the subatomic particles.

 

Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.

Specific Gravity

The ratio of the density of a substance to the density of water.