using english to compare: the elements

In order to compare the properties of elements, senyara and mix, worth listening to the definition of the elements, compounds and mixtures. Is a chemical element that can not be subdivided into smaller substance, or can not be converted into other chemical substances using ordinary chemical methods. The smallest particle of an element is an atom. An atom consists of a nucleus of an atom (nucleus) surrounded by electrons. Atom consists of a nucleus of protons and neutrons. Until now there are approximately 117 known elements in the world. The chemical compound is a single substance which is formed of several elements by chemical reaction and these compounds can also be broken down into its constituent elements by the chemical reaction. For example, dihydrogen monoxide (water, H2O) is a compound composed of two hydrogen atoms for every oxygen atom.

In general, this fixed ratio must be fixed due to the nature of physics, not a selected ratio of men. Therefore, materials such as brass, the superconductor YBCO, the semiconductor "aluminum gallium arsenide", or chocolate are considered mixtures or alloys rather than compounds. The characteristics that distinguish compound is that it has a chemical formula. The chemical formula gives the ratio of atoms in a substance, and the number of atoms in a single molecule (thus the formula for ethene is C2H4 and not CH2. The formula does not mention whether the compound is composed of molecules; for example, sodium chloride (common salt, NaCl is an ionic compound , The compound can form in several phases. Most of the compounds can be in the form of solids. Molecular compound may also be a liquid or a gas. All compounds will decompose to smaller compounds or individual atoms if heated to a certain temperature (called the decomposition temperature).

Now, let us understand about the mix. In general, a material not comprised of one type of a pure substance, but a mixture of several pure substances. For example, a mixture of sugar syrup (compounds of carbon, hydrogen, and oxygen) and water. However, can we distinguish between compounds and mixtures? A compound formed as a result of an event of chemical or chemical reaction, while the mixture resulting from the process of change that is completely different, namely the events of physics. Thus, the mixture can be defined as a material composed of two or more types of substances. The mixture consists of two types, namely a mixture of homogeneous and heterogeneous mixtures. Homogenous mixture is a mixture in which all parts of the mixture has the same composition and uniform. Also called a homogenous mixture Sample solution is a homogeneous mixture of tea and milk tea and milk solution is an example of a homogeneous mixture because we can no longer distinguish the constituent components of the solution, such as powdered milk, water, and sugar. Larena components of this solution was mixed into one and has the same arrangement of the components in all parts of the solution. Heterogeneous mixture is a mixture of the constituent is not uniform or not the same. Examples of heterogeneous mixture is a mixture of soil with gravel stones; This mixture of soil and gravel stone is an example of a heterogeneous mixture because we still can distinguish its components.

The nature of the Elements, Compounds and Mixed The nature of the elements In the composition of the Periodic Table, that the elements can be classified into elements that are metal and non metal elements. The following comparison of the two: Metal elements of non-metals It is a solid, except mercury. Can be either solid, liquid, and gas. Is strong and malleable. Are fragile and can not be forged. Can conduct electricity and heat does not conduct electricity and heat (insulator), except graphite.