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 11
A solution has a pH of 12. Is it acidic, basic, or neutral?
A solution of calcium hydroxide is tested with phenolphthalein. What color change is observed?
A student adds a base to a solution containing universal indicator. What color is likely to be observed?
A student adds a few drops of sodium hydroxide solution to a red litmus paper. What color will the paper turn?
Describe the difference between a strong base and a weak base.
Describe what happens when a base reacts with an acid.
Explain why aqueous solutions of bases conduct electricity.
Explain why bases are used in the manufacture of paper and textiles.
Explain why bases feel slippery to the touch.
Explain why strong bases are dangerous to handle without protection.
A solution of a base is found to have a concentration of 0.01 mol/L. Calculate the pOH of the solution and state whether the base is strong or weak if it is sodium hydroxide.
A student adds a few drops of dilute hydrochloric acid to a solution of sodium carbonate, and then adds a few drops of sodium hydroxide to the same mixture. Describe and explain the changes observed, focusing on the properties of the base involved.
Describe how the Bronsted-Lowry definition of a base differs from the Arrhenius definition, and give an example of a base that fits the Bronsted-Lowry definition but not the Arrhenius definition.
Explain, using chemical equations, how bases react with ammonium salts and state the observation made during the reaction.
State and explain what happens to the electrical conductivity of a base as it is diluted with water.
