Chemical composition

Chemical composition is the arrangement, type, and ratio of atoms in molecules of chemical substances. Chemical composition varies when chemicals are...

A chemical substance is any material with a known chemical composition. For example, water has the same properties and the same ratio of hydrogen to oxygen...

random aggregate of minerals and/or mineraloids, and has no specific chemical composition. Most of the rocks of the Earth's crust have quartz (crystalline...

A chemical element is a substance that is made up of only one type of atom. Atoms are made up of protons, neutrons, and electrons. The number of protons...

properties of distant stars and galaxies. It can find out their chemical composition, temperature, density, mass, distance, luminosity, and relative motion...

members are of similar age and chemical composition, so their properties (such as distance, age and chemical composition) are more easily studied than...

weathering is when the rocks and minerals are broken down but the Chemical composition remains the same. Mechanical weathering physically breaks up rock...

is the law of constant composition. This states that all samples of a given chemical compound have the same elemental composition by mass. For example, oxygen makes...

They tend towards pseudo-hexagonal crystals and are similar in chemical composition. The highly perfect cleavage, which is the most prominent characteristic...

shows how the chemical composition of a polymer consists of many smaller units (monomers) bonded together into a larger molecule. A chemical reaction bonding...

sedimentary rocks which cover the continents A worldwide average of the chemical composition of granite, by weight percent, based on 2485 analyses: Granite is...

Archaeometallurgy research is the analysis and comparison of the chemical composition of samples. This short article about science can be made longer....

atmospheric chemistry are important. Scientist record data about the chemical composition of air over time to watch for any changes. One example of this is...

Martín-Gil, F.J.; José-Yacamán, M. (2006), "Chemical composition of a fountain pen ink", Journal of Chemical Education, 83 (10): 1476–1478, doi:10.1021/ed083p1476...

color of the solution we are working with is colored because of its chemical composition. So the solution absorbs some light colors and reflects other colors...

conservation of mass, the law of definite composition and the law of multiple proportions in balancing chemical equations. This short article about chemistry...

Kaolinite or Kaolin is a clay mineral. It is in a group with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral, with one tetrahedral...

study of extragalactic H II regions helps to fix the distance and chemical composition of other galaxies. Spiral and irregular galaxies have many H II regions...

kind of electroluminescence. The color of the light depends on the chemical composition of the semiconducting material used, and can be near-ultraviolet...

have a strong structure. Instead, chemical bonds are broken within the liquids, altering their chemical composition. The effects of radiation on liquids...