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Chemistry for Biology (Structural of Matter (Elements (Atom: smallest…

- - - - Protons
        
        in nucleus, has mass, positive charge
      - Neutrons
        
        in nucleus, has mass, no charge
      - Electrons
        
        in energy shells, no mass, negative charge
        
        Octet rule: innermost shell fills with 2 electron: others shells fill with it
        
        Valence electrons: on outermost, shell, participate in bonding
        
        Covalent Bonding- electrons shared, pair go around both atoms
        
        Bonding- to fill valance shell, atoms bond to other atoms
        
        Compound- combinations of two or more elements, have different properties than component elements
        
        Bonding forms molecules- smallest particle of a compound with same properties
        
        Iconic Bonding: electrons given/taken causes ions