I know I havent posted for a suuuuper long time x( Sorry :P I'll have one last post about elements, compounds and mixtures (: just to clarify what these 3 are :D [over usage of emoticons sorry :/ ] After this, I'll go onto the chapter of Separation Techniques~ ^^
ELEMENTS - A substance consisting of atoms which all have the same number of protons - i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down further using chemical methods. Elements can only be changed into other elements using nuclear methods.
COMPOUNDS - A substance formed by the reaction of two or more chemical elements. The elements in a compound are present in fixed ratios. For example pure water is a compound made from two elements - hydrogen and oxygen. The fixed ratio of hydrogen to oxygen in water is 2:1. Each molecule of water contains two hydrogen atoms bonded to a single oxygen atom. Compounds can be decomposed chemically into their constituent elements.
MIXTURES - Composed of two or more substances, but each keeps its original properties.
All Clear? :)
Reference : http://www.chemicool.com/
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