Acids and Bases

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  • Acids and Bases
    • Ions
      • Polyatomic- when there are more than one ion in an atom
      • Monoatomic - when there is only one ion in the atom
      • Positive ions (cations)
      • Negative ions (anions)
    • Rates of reaction
      • Surface Area
        • by increasing this ( cutting up the substance into smaller pieces) the reaction rate will increase because the collisions can occur in more places
      • Concentration
        • this is the number of reactants in a mixture. decreasing the concentration lowers the rate of reaction and vice versa. concentration in a mixture usually decreses after time
      • Catalyst
        • these speed up the rate of the reaction without being used up themselves
      • Temperature
        • increasing the temp increases the kinetic energy. particles with high energy collide with more force. this means that more successful collisions are likely to occur
    • Acids
      • Form h+ ions in water
      • Sour
      • Corrosive
      • Ph of less than 7
      • When an acid react a metal slat is formed
    • Bases
      • Form OH- ions in water
      • Slippery to touch
      • Corrosive to Skin
      • Ph more than 7
      • Most are insoluble but those that do dissolve are called Alkalis
    • Reactions
      • Neutralisation
        • This is when a metal oxide (acid) combines with a metal hydroxide (base) the products of this are salt and water
      • Acid + Carbonate
        • this is when a carbonate or hydrogen carbonate reacts to an acid. the products are salt,carbon dioxide and water


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