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12 questions
A substance is found to have the following characteristics:
Very bitter taste
Feels slippery to the touch
Produces OH- ions when dissolved in water
In what category would the substance be classified?
acid
base
enzyme
fatty acid
Which of the following is an acid?
vinegar
bleach
sugar in water
starch in water
toothpaste in water
The pH value of an acid represents its __________ of positive ions in the solution
amount
concentration
color
charge
An acid is a solution that contains __________ ions dissolved in water.
positive
negative
Bases have many uses. They are mainly used to make
cleaning products
soaps
concrete
all of the answer choices
The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.
True
False
All bases have a sour taste.
True
False
Which of the following pH values represents a base?
2.1
4.6
6.8
8.1
Bases turn blue litmus paper red.
True
False
Which type of acid/bases dissociate completely?
strong
weak
What type of substance partially dissociates in water?
Strong acids and bases
Weak acids and bases
Neither acids nor bases
Neutral substances
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