Quiz on Reactions Between Acids and Bases

What is formed when metal oxides or hydroxides react with an acid?

• Salt and water

• Salt and carbon dioxide

• Water and carbon dioxide

• Salt only

Which of the following is an example of a metal oxide?

• Sodium oxide

• Potassium hydroxide

• Copper chloride

• Calcium carbonate

What additional product is formed when acids react with metal carbonates?

• Hydrogen

• Oxygen

• Carbon dioxide

• Chlorine

What is the charge of a sulfate ion?

• 1-

• 2-

• 2+

• 1+

What is the correct formula for potassium sulfate?

• K2SO4

• KSO4

• KSO3

• K2S

What is the first step in making a soluble salt using an insoluble base?

• Evaporate the water

• Add the base to the acid

• Heat the acid

• Filter the solution

Why should a water bath or electric heater be used instead of a Bunsen burner when evaporating water?

• To prevent overheating and damaging the salt

• To save energy

• To avoid using open flames

• To heat the solution faster

What indicates that the base is in excess during the reaction?

• The solution becomes clear

• The solution starts boiling

• The base stops disappearing

• The solution changes color

What is the final step in obtaining pure solid crystals of a soluble salt?

• Heat the crystals

• Add more base

• Filter the crystals and dry them

• Add more acid

What is the purpose of filtering the solution after the reaction is complete?

• To remove water

• To remove salt

• To remove excess base

• To remove excess acid