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Acids
Bases
The pH Scale
Labs
Miscellaneous
100
If you were allowed to taste acids and bases, this is how you could tell the difference.
What is a sour taste (acids) vs. a bitter taste (bases)?
100
What color litmus paper can be used to identify a base from an acid?
What is red litmus paper (turns blue)?
100
This is the range of values for the pH scale.
What is 0-14?
100
In the absence of litmus paper, use this as an indicator to tell you the pH of a common, everyday substance.
What is cabbage juice or universal indicator?
100
This is why Ca(OH)2 is considered a base.
What is it gives hydroxide ions in water?
200
Acids react with bases to form a salt and __________.
What is water?
200
If you were allowed to touch a base, this is one word you could use to describe it.
What is slippery?
200
Give the pH ranges for acids, bases, and neutral solutions.
What is 0-6 acids, 7 neutral, 8-14 bases
200
This type of litmus paper (blue or red) should be used to identify a base.
What is red litmus paper (turns blue)?
200
When reacting with a metal, gases are formed with this substance (either acid or base?)
What is acid?
300
Acids react with metals and produce this gas.
What is hydrogen gas?
300
Give an example of an everyday base.
TBD
300
Give the pH of the strongest acid known and the pH if the strongest base known.
What is 0 for strongest acid and 14 for strongest base?
300
This color is observed when bromothymol blue is in the presence of an acid.
What is yellow?
300
Ca(OH)2 has a pH in what range?
What 7-14?
400
Give an example of an everyday acid.
What is orange juice, lemon juice, tomato juice, etc.
400
This is the type of ion that a base releases into solution.
What is a hydroxide (OH-) ion?
400
Which has more hydrogen ions in solution - a substance with a pH of 4 or a substance with a pH of 5?
Substance with pH of 4.
400
Please give an example of a neutral solution.
What is DISTILLED water?
400
Write the dissociation of hydrochloric acid, HCl?
HCl -> H+ + Cl -
500
Acids produce this type of ion in solution.
What is a hydrogen ion?
500
Which substance releases more hydroxide ions into solution? A substance with a pH of 12 or one with substance of pH 14?
pH of 14.
500
Antacids have a pH of 11 and drain cleaner has a pH of 14. If you tested both substances with red litmus paper, this is the color.
What is blue?
500
Describe how you could decrease the amount of hydrogen ions (pH) in a solution.
add a neutral or basic solution to it.
500
What is the chemical reaction for hydrochloric acid and magnesium metal? (Lab)
Mg + 2HCl -> MgCl2 + H2