Base (chemistry)

The video tutorial explains the nature of bases, which are typically metal oxides, hydroxides, or carbonates. Bases accept hydrogen ions in reactions, producing hydroxide ions. While most bases are insoluble in water, those that dissolve form alkaline solutions with a pH greater than 7.

Which of the following is NOT typically considered a base?

• Metal oxide

• Metal hydroxide

• Metal sulfate

• Metal carbonate

What do bases produce when they react in solutions?

• Hydrogen ions

• Hydroxide ions

• Sulfate ions

• Carbonate ions

What is the role of bases in chemical reactions?

• Release oxygen

• Produce carbon dioxide

• Accept hydrogen ions

• Donate hydrogen ions

What happens when a base dissolves in water?

• It evaporates

• It forms an alkali

• It becomes neutral

• It forms an acid

What is the pH level of a solution when a base dissolves in water?

• Greater than 7

• Less than 7

• Exactly 7

• Equal to 7