Understanding Acids and Bases

Which of the following is a property of acids?

• They have a bitter taste.

• They have a pH greater than 7.

• They turn blue litmus paper red.

• They feel slippery.

What happens when acids react with metals?

• They produce carbon dioxide.

• They produce nitrogen gas.

• They produce hydrogen gas.

• They produce oxygen gas.

Which property is common to bases?

• They have a pH less than 7.

• They have a sour taste.

• They turn red litmus paper blue.

• They are not slippery.

What is the primary component of dish soap that makes it a base?

• Sulfuric acid

• Citric acid

• Glycerol

• Lactic acid

According to the Arrhenius model, what do acids produce when dissolved in water?

• Hydroxide ions

• Chloride ions

• Hydrogen ions

• Sodium ions

In the Arrhenius model, what do bases produce when dissolved in water?

• Sodium ions

• Hydroxide ions

• Chloride ions

• Hydrogen ions

What is a key concept of the Brønsted-Lowry model?

• Bases do not accept protons.

• Acids are proton donors.

• Bases are proton donors.

• Acids are proton acceptors.

In the Brønsted-Lowry model, what is a conjugate base?

• A base that has gained a proton.

• An acid that has lost a proton.

• A base that has lost a proton.

• An acid that has gained a proton.

What is the conjugate acid of NH3 in the Brønsted-Lowry model?

• NH4+

• NH2+

• NH5+

• NH3+

What happens to HCl in water according to the Brønsted-Lowry model?

• It accepts a proton.

• It donates a proton.

• It remains unchanged.

• It forms a hydroxide ion.