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Matter (Mixtures (Heterogeneous mixtures (Heterogeneous mixture: the parts…

- - - - Elements
        
        Element: a substance that cannot be broken down into simpler substances
        
        Examples
        
        -Aluminum foil
        
        -Soda cans (most made of aluminum)
        
        -Pencil lead (contains carbon)
        
        -Oxygen, nitrogen, bromine, mercury
        
        Symbols
        
        Created by: Jons Berzelius in 1813
        
        First letter always capitalized
        
        2nd letter (if any) never capitalized
        
        Letters were chosen based on the Latin names of elements
        
        Atom: the smallest particle of any given element
        
        KEY: an element has a fixed composition because it contains only one type of atom.
        
        No two elements contain the same type of atom
      - Compounds
        
        Compound: A substance that is made from two or more substances and can be broken down into simpler substances.
        
        KEY: compound always contains two or more elements joined in a fixed proportion
- - - - Solutions: what happens when substances dissolve and form a homogeneous mixture, the mixture that forms is a solution
    - - Suspension: A heterogeneous mixture that separates into layers over time.