PROPERTIES OF BASES

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• Base: an aqueous solution that conducts electricity and turns red litmus blue
• It changes the colour of acids
• Unlike acids, bases feel slippery and taste bitter
• Bases are electrolytes meaning that theyre solutions are good conductors of electricity
• For example, sodium hydroxide, is an electrolyte because it completely separates

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• Into ions as it dissolves in water
• Many common bases are ionic compounds meaning its made up of ions
• For example: borium hydroxide is another base. As a oute compound its a solid
• But when placed in water, it releases one barium ion and two hydroxide ions

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• Several natural chemicals and many synthetic (human made) chemicals
• change colour when they are placed in an acidic or basic solution
• acid-base indicator: A substance that changes colour based on whether it
• is an acid or a base.

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