Chemistry Quiz

According to the Arrhenius theory, what is an acid?

• A substance that increases the concentration of hydroxide ions in aqueous solution.

• A substance that donates a proton to another substance.

• A substance that increases the concentration of hydrogen ions in aqueous solution.

• A substance that accepts a proton from another substance.

What does the Bronsted-Lowry theory define as a base?

• A substance that increases the concentration of hydrogen ions in aqueous solution.

• A substance that donates a proton to another substance.

• A substance that increases the concentration of hydroxide ions in aqueous solution.

• A substance that accepts a proton from another substance.

What happens when an acid is dissolved in water?

• It produces oxygen ions

• It produces hydrogen ions

• It produces nitrogen ions

• It produces carbon dioxide

What is a base in chemical terms?

• A substance that increases the hydrogen ion concentration in water.

• A substance that decreases the oxygen ion concentration in water.

• An ionic compound that produces hydroxide ions when dissolved in water.

• A compound that reacts with acids to form salts only.

What happens when an Arrhenius acid like HCl is dissolved in water?

• It forms a precipitate.

• It releases hydrogen gas.

• It dissociates into hydrogen ions and chloride ions.

• It increases the pH of the solution.

What happens when an Arrhenius base is added to an aqueous solution?

• It forms hydrogen (H+) ions.

• It increases the pH level of the solution.

• It forms hydroxyl (OH-) ions.

• It decreases the solubility of the solution.

What happens when a compound like KCl dissociates in an aqueous solution according to Arrhenius theory?

• It forms H+ ions.

• It forms OH- ions.

• It does not form H+ or OH- ions.

• It reacts with water to form a precipitate.

Using the Arrhenius definition, classify the compound HBr as an acid, base, or salt.

• Acid

• Base

• Salt

• None of the above

Using the Arrhenius definition, classify the compound Mg(OH)2 as an acid, base, or salt.

• Acid

• Base

• Salt

• None of the above

Using the Arrhenius definition, classify the compound KCl as an acid, base, or salt.

• Acid

• Base

• Salt

• None of the above