acids, bases, & indicators
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3 properties of acids
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tastes sour, can be harmful, reacts with metals to produce hydrogen gas
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3 properties of bases
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tastes bitter, feels slippery, does not react with other metals
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what does corrosive mean?
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it \"eats away\" at materials
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what is an indicator?
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a compound that changes color when in comes in contact with an acid or a base
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why does lemon juice turn blue litmus paper red?
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because it's an acid
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why is a universal indicator more useful than litmus paper to identify acids and bases?
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a universal indicator can identify whether it's a strong or weak acid/base, and litmus paper only tells if it's an acid or base
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bases react with acids to...
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cancel the acids out
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example of strong acids
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battery acid and stomach acid
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examples of weak acids
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vinegar and lemon juice
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examples of strong bases
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drain cleaner and ammonia
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examples of weak bases
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toothpaste and soap
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What makes blue litmus paper turn red?
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Acids
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What makes red litmus paper turn blue?
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Bases
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What color does phenolphthalein turn when there is an acid present?
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Yellow
