Chemical Reactions

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  • Chemical Equations
    • CHEMICAL CHANGES are SHOWN using CHEMICAL EQUATIONS
      • One way to show a chemical reaction is to write a WORD EQUATION.
      • Not as QUICK as using chemical symbols and you can't tell staright away WHAT'S HAPPENED to each of the ATOMS, but it's DEAD EASY.
    • SYMBOL EQUATIONS show the atoms on both sides
    • SYMBOL EQUATIONS need to be BALANCED
      • There must always be the SAME number of atoms on BOTH SIDES.
      • You BALANCE the equation by putting numbers IN FRONT of the formulas where needed.
        • The FORMULAS may be correct but some atoms DON'T MATCH UP on both sides.
      • 1. Find an element that DOESN'T BALANCE and PENCIL IN A NUMBER to try and sort it out.
        • 2. SEE WHERE IT GETS YOU. May create another IMBALANCE, if so pencil in ANOTHER NUMBER.
    • IONS
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