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Cycle 4 Overview (Matter (Elements (Elelctrons (Have a negative charge),…

- - - - Chemical Bond
        
        When to atoms combine by a force usually to form a larger particles called molecules
    - - The physical force of attraction which holds atoms and molecules in a matter is called physical bond.
  - - - Have a negative charge
    - - Have no charge
    - - Positive charge
    - - Shows the atomic mass, number, valence electrons and familes of the table
  - - - a numeric scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the base 10 logarithm of the molar concentration, measured in units of moles per liter, of hydrogen ions.
  - - - A characteristic of a pure substance that can be observed without changing it into another substance.
    - - A characteristic of a pure substance that describes its ability to change into different substances
    - - a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
    - - . A physical change in a substance doesn't change what the substance is.