Everyday acids & alkalis

你需要知道的

• Acids and bases are found all around us: the stomach is acidic and blood is slightly basic.
• Before atoms were understood, acids were known for tasting sour and corroding metals, and bases for feeling slippery and cancelling out acids.
• Strong acids give up their hydrogen ions completely in water; weak acids, such as the acid in vinegar, only give up a few.
• Ammonia used in glass cleaner is a weak base, and an acid and a base together can cancel out in neutralisation.

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