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the differences between elements, compounds and mixtures

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emily ruth currie

on 23 October 2012

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Transcript of the differences between elements, compounds and mixtures

elements an element is a substance made up of only one type of atom
-copper is an element made out of copper atoms only
-helium is an element made out of helium atoms only
-carbon is an element made out of carbon atoms only

*elements cannot be split up, simple substances
*elements all have one word-names (a symbol) which are all found in the periodic table
-examples: oxygen=O
-iron=Fe ect... compound compound means that there are two or more different elements chemically joining together, eg, water (H2O)
-water has two elements -hydrogen (H) and oxygen (O)-
that chemically bond together to form water = = examples of compouns:
-sodium chloride
-hydrochloric acid
-carbon dioxide all contain more than one element introduction its important to know the different substances in a mobile phone because there could be hazardous and toxic chemicals. these chemicals can cause harm to you if not handled properly

its important, however, to recycle certain elements from the mobile phone because for example copper is important because it can be reused for other things thanks to its strength and durability

compounds are important to recycle because plastics for example can be reused due to their durability end

plastics can easily be molded and shaped, usually by heat or pressure

mixtures are important because compounds and elements can be reused or used for something entirely different. mixtures A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A C O O carbon (C)
oxygen (O) carbon dioxide
(CO2) -a mixture can contain both an element and a compound oxygen hydrogen sulfur two oxygen atoms
join together to
create an oxygen
element alot of the same
type of atoms (in this case sulfur atoms) can join
together which will
still create an element two hydrogen atoms are creating
hydrogen H H H H H H C C O carbon (C)
hydrogen (H)
oxygen (O) Ethyl Alcohol
(C H OH) = = -a mixture is a combination of two or more substances
that can be as easily seperated as it can be combined. when the two substances combine they create a new (and very long) formula that will either have both the traits of the combined substances or one will be cancelled out in the combining procedure 2 5 heterogeneous -salt water H H O Na Cl Na Cl Na Cl H H O H H O the differences between elements
compounds and mixtures by emily,
celma, tanzina and jessica.
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