Álcali

The video explains that alkalis are formed when soluble chemical bases dissolve in water. Common bases include hydroxides, oxides, and metal carbonates. However, not all bases produce alkalis, as many are insoluble in water.

What happens when a soluble chemical base is dissolved in water?

• It forms a salt.

• It forms an acid.

• It forms a gas.

• It forms an alkali.

Which of the following is NOT a common type of base?

• Non-metal oxides

• Metal carbonates

• Oxides

• Hydroxides

Which of these bases is likely to be soluble in water?

• Oxides

• Hydroxides

• All of the above

• Metal carbonates

Why do not all bases produce alkalis?

• Because they are all soluble in water

• Because they are all insoluble in water

• Because many are insoluble in water

• Because they react with acids

What is a characteristic of bases that do not form alkalis?

• They are soluble in water

• They are insoluble in water

• They are reactive with metals

• They are acidic