Chemical changes GCSE Chemistry

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  • Chemical changes
    • displacement involves one metal 'kicking' another one out of a compound
      • for example... iron + copper sulphate = iron sulphate + copper
    • Acids release H+ ions
    • Alkalis release OH- ions
    • A redox reaction is a reaction with oxidation and reduction
    • Oxidation is loss of electrons or gain of oxygen
    • Reduction is gain of electrons or loss of oxygen
    • A strong acid is where all particles dissociate
    • A weak acid doesn't fully ionise in water
    • acid + alkali = salt + water


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