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 9
A student adds a few drops of sodium hydroxide solution to a test tube containing copper(II) sulfate solution. What is observed?
Describe the effect of a base on methyl orange indicator.
Describe what happens to red litmus paper when it is dipped into a basic solution.
Describe what happens when a base is added to an acidic solution.
Explain why bases are slippery to touch.
Explain why bases are used in cleaning products.
Explain why it is dangerous to touch concentrated bases with bare hands.
A student adds a few drops of sodium hydroxide solution to a test tube containing copper(II) sulfate solution. What is observed?
Which of the following bases is used in antacid tablets?
(1) Sodium hydroxide
(2) Magnesium hydroxide
(3) Calcium hydroxide
(4) Ammonium hydroxide
Which of the following is a general property of bases?
(1) They taste sour
(2) They turn red litmus blue
(3) They react with metals to produce hydrogen gas
(4) They turn blue litmus red
Which of the following is a property of a basic solution?
(1) pH less than 7
(2) Turns red litmus blue
(3) Tastes sour
(4) Does not conduct electricity
Which of the following is a property of alkalis?
(1) They are always insoluble in water
(2) They turn methyl orange red
(3) They turn phenolphthalein pink
(4) They taste sour
Bases have a pH value ______ than 7.
Fill in the blank: A base that does not dissolve in water is called an ______ base.
Fill in the blank: Ammonia solution is a ______ base.
Fill in the blank: Bases react with acids to form ______ and water.
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: Bases can be corrosive to skin.
True or False: Bases can be found in both solid and liquid states.
