which chemical is a base?
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Base, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of indicators (e.g., turns red litmus paper blue), reacts with acids to form salts, and promotes certain chemical reactions (base catalysis).
It has pH higher than 7.
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examples of bases are the hydroxides of the alkali and the alkaline earth metals and the water solutions of ammonia or its organic darivatives. such substances produce hydroxide ions in water solutions. indicator paper is also used to determine the pH of a liquid.
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