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Properties
In the Lab
Neutralization
pH Scale
Miscellaneous
100
Which substances taste sour when eaten?
Acids
100
What color does litmus paper turn when it is dipped into a strong acid?
Red.
100
What are the two products of a neutralization reaction?
Salt and water.
100
What pH range are considered bases?
8-14
100
Explain how what we have learned about acids and bases will prepare us for the Upset Stomach Challenge
(Multiple Acceptable Answers)
200
Which type of substances feel very slippery?
Bases
200
What color would litmus paper turn if it were dipped into pure water?
Yellow
200
What should you add in order to neutralize a strong base?
A strong acid.
200
Which pH would be considered the strongest acid?
pH 0.
200
What is the ion OH- called?
Hydroxide Ion
300
Which type of substance will react violently with metal?
Acid
300
What color would a cleaning product such as bleach turn litmus paper? Explain.
It would turn litmus paper blue because its a base.
300
What would happen if you mixed a strong acid with a weak base? What type of substance would result?
The product would be a weak acid.
300
Each time you decrease the pH of a substance by 1, by how much does the concentration of hydronium ions increase?
It increases by 10 times.
300
If a substance with pH 14 is mixed with a substance with pH 7, what color will the litmus paper most likely turn? Explain.
Dark Green or Blue because the mixture results in a weak base.
400
Which type of substance will create a large number of hydroxide ions?
Base
400
What is an indicator? Provide at least one example.
Indicators determine the pH of a substance. Cabbage juice, litmus paper, and pH paper are examples.
400
How would you neutralize a substance with pH 6? Explain how this works by describing the hydronium ions.
Add a substance with pH 8 because concentration of 1/10 would cancel concentration of 10.
400
Would a substance with a pH of 6.4 be considered an acid, base, or neutral? How do you know?
This substance would be an acid because its pH is less than 7.
400
Lemon Juice has a pH of 2. Hydrochloric acid has a pH of 1. Jessie believes that Lemon Juice is two times stronger than Hydrochloric acid. Do you agree with Jessie? Why or why not?
No because Hydrochloric acid is 10 times stronger than Lemon Juice.
500
Which type of substances are good conductors of electricity?
Acids AND Bases
500
Compare the number of H3O+ ions to the number of OH- ions in a solution that is considered a very strong acid.
There we be significantly more H3O+ ions than OH- ions.
500
How would you neutralize a substance with pH 10? Explain how this works by describing the hydronium ions.
Add a substance with pH 4 because a concentration of 1000 would cancel out a concentration of 1/1000
500
"Liquid-X" has a pH of 3. "Liquid-O" has a pH of 6. How much stronger of an acid is Liquid-X than Liquid-O? Explain how you know.
Liquid-X is 1000 times stronger than Liquid-O because 10000/10 = 1000.
500
Substance A has a pH of 0. Substance B has a pH of 14. If 20mL of substance A were mixed with 10mL of substance B, would it result in an acid, base, or neutral substance? Explain.
It would be acid because there was more acid (20mL) than base (10mL).