Mixtures+and+How+They+are+Different+from+Compounds.

= __**Homogenous and Heterogeneous Mixtures**__ .=

__**What is a chemical mixture?**__
====A chemical mixture is an accumulation of molecules or atoms of different types. A mixture is distinguished from a pure substance, and a unique set of physical properties. The properties of a mixture depend on the substances that compose it and their relative amounts; the composition of a mixture is not constant.====

__**What is a Heterogeneous Mixture?**__
====A Heterogeneous mixture is one of the main types of chemical mixtures. A Heterogeneous mixture is made of different materials that remain physically separate. A heterogeneous mixture consists of visible different substances or phases. The three states of matter are solid, liquid, and a gas. A heterogeneous mixture can also be called a suspension mixture and separate if they are left standing for long periods of time. This happens when oil separates away from water after a long period of time no matter how much you may mix it together.====

__**How can you physically separate a Heterogeneous Mixture?**__
====You can physically separate in many ways. Using water can wash out some things, such as washing out sugar from sand. Also, you can use filters to filter out things, such as when you need to use a filter to filter out vinegar from water. Just simply picking up an item and taking it off or out of a mixture such as when you take raisins out of baking soda.====

__**What is a Homogeneous Mixture?**__
====One of the main types of a mixture is a homogeneous. Homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixture are commonly mention as a solutions. A solution is a mixture of two or more objects in a single phase. At least two materials must be mixed together in order to have a substance. Small amount and the one that dissolves is known as Solute, Substances in larger amounts are know as Solvent//.//====

__**How does a Homogeneous Mixture Separates?**__
====Distillation is a physical separation process. Yes Homogeneous mixture can be separated into individual materials. Pieces of a liquid or gas, has to involves the use of heat to separated. Salt present in seawater is separated by this method, also.====

__**How is a Heterogeneous Mixture Different From a Homogeneous Mixture?**__
====Unlike a homogenous mixture a heterogeneous mixture uses physical separation. Homogeneous mixture can only by heat or chemically separated. They are both chemical mixtures and can both be separated into pure compounds or/and elements. An example of a homogeneous mixture is salt water because they can be separated but they can not be physically separated. Unlike iron and sulfur which have been mixed together salt water can not be physically separated. This can happen by holding a magnet above the mixture the magnet will attract the iron and leave the sulfur behind.====

__**What is a compound?**__
====Compounds are untouched substances made of atoms or more elements chemically combined in fixed ratios. Elements merge together to form chemical compound that are often divided into categories, Ionic compounds and Covalent compounds. Ionic compound form when metals often react with nonmetals. These compound are composed of positive and negative ions formed by adding and subtracting electrons and neutral atoms molecules. Covalent compounds form when nonmetals combine with each other. They exist as neutral molecules. Shorthand nations for a compound describes the number of atoms of each element, which indicated by a subscript written after the symbol for the elements.====

__**How is a Heterogeneous Mixture Different From a Compound?**__
====Compounds have a constant and definite composition unlike heterogeneous mixtures witch can have almost any proportion. In a compound elements lose their characteristic elemental properties, while in a heterogeneous mixture the elements can be physically separated. Compounds are typically accompanied by the evolution of light and heat. Meanwhile the heterogeneous mixture can just be stirred together such as when you mix fruits in a bowl and then physically took apart.====

__**How is a Homogeneous Mixture Different From a Compound?**__
====A mixture can be chemically/heated into unadulterated compounds or elements. About everything you can think of probably a mixture. A compound has a continuous composition with fixed ratios of element. One can you put two or more things together and can physically separate it. The other one you can’t. For example a mixture of alcohol and water boils over a range of temperature. Another example of a compound pure water boils at 100 degrees C.====





**__Resources__**
====Senese, Fred. "What is a heterogeneous mixture?." General Chemisrty Online. Frostburg State University, 15 Feb. 2010. Web. 27 Jan. 2012. .====

====Califorina, University of. "Classification of Matter." UC Davis Chemwiki. Mind Touch core 2010, 28 Nov. 2010. Web. 27 Jan. 2012. .====

====Industries, Net. "Chemical Compound - Non-Chemical Definitions, History, Early Theroies Of Compounds, Modern Theory Of Compounds, Types Of Compounds." Science Encyclopedia. Net industries, 2012. Web. 30 Jan. 2012. ====

Senese, Fred. "What is a compound?." General Chemistry Online. Frostburg State University, 15 Feb. 2010. Web. 30 Jan. 2012. . http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch2/mix.html#compd

Ophardt, Charles E. "What are Mixtures and Solutions?." Vitrual Chembook. Elmhurt college, 2003. Web. 30 Jan. 2012. .

Johnson, Priya E. "Homogeneous Mixture."20 May 2010. Web. 31 Jan. 2012. .

http://www.elmhurst.edu/~chm/demos/danceraisins.html