Properties of Bases
Chemistry ⇒ Acids, Bases, and Salts
Properties of Bases starts at 7 and continues till grade 12.
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See sample questions for grade 10
A solution has a pH of 12. Is it acidic, neutral, or basic?
A student adds a few drops of sodium hydroxide solution to red litmus paper. What color will the paper turn?
Describe the effect of bases on phenolphthalein indicator.
Describe what happens when a base reacts with an acid.
Explain the difference between a strong base and a weak base.
Explain why bases are slippery to touch.
A solution has a pH of 12. Is it acidic, neutral, or basic?
A student adds a few drops of sodium hydroxide solution to red litmus paper. What color will the paper turn?
Which of the following bases is commonly used in soap making?
(1) Sodium chloride
(2) Sodium hydroxide
(3) Calcium carbonate
(4) Ammonium chloride
Which of the following is a general property of bases?
(1) They turn red litmus blue
(2) They turn blue litmus red
(3) They have a sour taste
(4) They react with metals to produce hydrogen gas
Which of the following is a property of a base?
(1) Produces H+ ions in water
(2) Produces OH- ions in water
(3) Turns methyl orange red
(4) Has a pH less than 7
Which of the following is a property of alkalis?
(1) They are insoluble in water
(2) They turn phenolphthalein colorless
(3) They turn red litmus blue
(4) They have a sour taste
Bases have a pH value ______ than 7.
Fill in the blank: A base that dissolves in water is called an ______.
Fill in the blank: Bases react with acids to form ______ and ______.
Fill in the blank: Bases turn ______ litmus paper ______.
True or False: All alkalis are bases, but not all bases are alkalis.
True or False: All bases are soluble in water.
True or False: Ammonia solution is a base.
True or False: Bases can be both organic and inorganic compounds.
