Properties of Acids and Bases

True or false: bases are sometimes called alkaline.

• True

• False

What color does litmus paper turn in the presence of an acid?

• blue
• black
• green
• red

Tags

NGSS.MS-PS1-2

You test a solution with pH paper, and the paper turns blue. The solution is ______.

• neutral

• an acid

• a base

• an acid & a base

Which compound is the conjugate base?

HCO₃^- + HCl ==> H₂CO₃ + Cl^-

• HCO₃^-

• HCl

• H₂CO₃

• Cl^-

Tags

NGSS.HS-PS1-2

NH₃ + H₂O --> NH₄⁺ + OH^-

What is H₂O in this reaction?

• acid

• base

• conjugate acid

• conjugate base

In the reaction below, H₂O is a(n):

H₂SO₃ + H₂O --> H₃O⁺ + HSO₃^-

• base

• acid

• conjugate acid

• conjugate base

In the reaction HCl + H₂O --> H₃O⁺ + Cl^-, what is the conjugate acid?

• HCl
• H₂O
• H₃O⁺
• Cl^-

HSO₄^- + H₂O → H₃O⁺+ SO₄^2-
Identify the Acid in the above reaction.

• HSO₄^-
• H₂O
• H₃O⁺
• SO₄^2-

Produces a salt and water in a neutralization reaction

• acid

• base

• both an acid and a base

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

All bases have a sour taste.

• True

• False