Acid, Base, Neutral Vocabulary Review
Hydroxide ions (OH-)_ _ 1. Bases release this into solution.
Hydrogen ions (H+) _____ 2. Acids release this into solution.
___________Red _______ 3. Color Acids turn Blue litmus paper.
________Blue ________ 4. Color Bases turn Red litmus paper.
__________Red _______ 5. Color of Universal pH Indicator in Vinegar (an acid).
_______Blue or Purple___ 6. Color of Universal pH Indicator in NaOH (a base).
A neutralization reaction which forms a neutral or H2O and Salt____ 7. This (or these) form when equal amounts of a strong acid and a strong base are added together.
_____Water _______ 8. Most common neutral.
Vinegar, Lemon Juice, Citric Acid, Vitamin C, Aspirin___ 9. Common acid.
Soap, Bleach, Drain cleaner, NaOH, Sodium bicarbonate_ 10. Common base.
__________0-6___ 11. pH range of acids.
____________8-12 or 14_____ 12. pH range of bases.
____________7________ 13. pH of neutrals.
Universal pH solution, cabbage juice (Base turns blue and acid turns red)______ 14. A common indicator of acids and bases and how it works.
______________________ 15. If you have an unknown liquid in the science class, how would
you go about figuring out what it is and making the liquid safe
for clean-up? Describe the process.
Answer to #15 - You could use litmus paper to first determine if you have an acid, base or neutral. If it's neutral you can clean up with paper towels (and gloves). To determine strength of an acid or a base, you need an indicator to determine exact pH. If the indicator like universal pH solution turns red, you have an acid. Mix with a common base like Sodium bicarbonate (NaHCO3) - baking soda to neutralize - and then clean up. For a base, use a common acid like citric acid to neutralize and clean up. It's always good to wear gloves. Neutral doesn't always mean safe - chemicals can still be poisonous to us.
