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Acids, Bases and pH
The pH scale, properties of acids and bases, and everyday examples.
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53 cards
- What does pH measure?QuestionHow acidic or basic a solution is
- pH range of the common scaleQuestion0 to 14
- pH of a neutral solutionQuestion7
- Acids have a pHQuestionLess than 7
- Bases have a pHQuestionGreater than 7
- pH of pure waterQuestion7
- Taste of acidsQuestionSour (never taste in lab)
- Feel of basesQuestionSlippery (never touch unknown ones)
- Taste of basesQuestionBitter
- Litmus paper in acidQuestionTurns red
- Litmus paper in baseQuestionTurns blue
- Phenolphthalein in baseQuestionTurns pink
- Universal indicatorQuestionChanges color across the pH scale
- IndicatorQuestionA substance that changes color to show acidity or basicity
- NeutralizationQuestionAn acid and a base react to form water and a salt
- Salt (in chemistry)QuestionAn ionic compound made when an acid reacts with a base
- Lemon juiceQuestionAn acid, pH about 2
- VinegarQuestionAn acid, containing acetic acid
- Stomach acidQuestionHydrochloric acid, very strong
- Baking sodaQuestionA weak base
- SoapQuestionA base; it feels slippery
- Ammonia cleanerQuestionA base
- BleachQuestionA strong base, pH about 12 to 13; do not mix with other cleaners
- MilkQuestionNearly neutral, slightly acidic
- Black coffeeQuestionA weak acid
- Orange juiceQuestionAn acid, pH about 3 to 4
- AntacidQuestionA base that neutralizes extra stomach acid
- Citric acidQuestionThe acid in lemons and oranges
- Carbonic acidQuestionA weak acid in fizzy drinks
- Sulfuric acidQuestionA strong acid used in car batteries and industry
- Hydrochloric acidQuestionA strong acid, formula HCl
- Sodium hydroxideQuestionA strong base, formula NaOH, also called lye
- Each step on the pH scaleQuestionIs ten times stronger or weaker than the next
- Which is more acidic, pH 3 or pH 5?QuestionpH 3, a hundred times more acidic
- Strong acidQuestionAn acid that breaks apart fully in water
- Weak acidQuestionAn acid that only partly breaks apart in water
- AlkalineQuestionAnother word for basic
- CorrosiveQuestionAble to eat away at materials
- Acid rainQuestionRain made acidic by pollution, with pH below about 5.6
- H+QuestionThe hydrogen ion that acids release in water
- OH-QuestionThe hydroxide ion that bases release in water
- HydroniumQuestionH3O+, formed when an acid adds H+ to water
- BufferQuestionA solution that resists changes in pH
- TitrationQuestionAdding a solution of known strength drop by drop to find an unknown concentration
- pH of bloodQuestionAbout 7.4, slightly basic
- Red cabbage juiceQuestionA natural indicator that changes color with pH
- Mixing vinegar and baking soda makesQuestionCarbon dioxide gas, which fizzes
- Do acids conduct electricity in water?QuestionYes, because they form ions
- Which acid is in ant stings?QuestionFormic acid
- Which acid is in vinegar?QuestionAcetic acid
- Which acid is in yogurt and sour milk?QuestionLactic acid
- Which acid is in our muscles after hard exercise?QuestionLactic acid
- Which scientist invented the pH scale in 1909?QuestionSoren Sorensen
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