Questions and Answers
A solution with a pH of 5 is an ______.
acid
How do bases feel?
slippery
What is a solution that has an excess of hydrogen ions?
acid
Which substance is slightly basic?
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Which one is more acidic?
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What is a solution that has excess of hydroxide ions?
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Phenolphthalein is an indicator that turns pink when added to an acidic solution.
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A positive test for an acid is when blue litmus paper turns ______.
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If a solution placed on a sheet of metal creates bubbles, the solution is most likely what?
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What type of reaction occurs when an acid and a base combine to create a salt and water?
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Study Notes
Acids
- Acids are solutions with a pH of 5 or lower, indicating an increase in hydrogen ions.
- A solution that feels slippery is associated with bases, not acids.
- Gastric juice is more acidic than acid rain and rainwater, playing a critical role in digestion.
Bases
- Bases have a slippery feel, which is a characteristic descriptor.
- A solution with an excess of hydroxide ions is classified as a base.
- Antacids are examples of slightly basic substances that neutralize stomach acid.
Indicators and Tests
- Phenolphthalein is a pH indicator that turns pink in basic solutions, indicating the presence of hydroxide ions.
- A positive test for acidity occurs when blue litmus paper turns red upon contact with an acidic solution.
- The presence of bubbles when a solution is placed on a metal typically indicates an acidic reaction.
Neutralization Reaction
- Neutralization is the chemical reaction that occurs when an acid and a base combine to produce salt and water, helping to balance pH levels and overly acidic or basic conditions.
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Description
Test your knowledge on acids and bases with these coloring flashcards. Each card provides a key term related to the characteristics of acids and bases, along with their definitions. This quiz is perfect for reinforcing your understanding of these fundamental concepts in chemistry.
