BJU Phy. Sci. Chapter 10

Aqueous solutions are solutions

• that produce hydronium ions.

• that produce hydroxide ions.

• where any liquid is the solvent.

• where water is the solvent.

Which of the following represents a hydronium ion?

• H⁺

• OH⁻

• H₂O

• H₃O⁺

What kind of substance is Mg(OH)₂?

• an acid

• a base

• a salt

• both an acid and a base

You should never taste any chemical in a laboratory to determine whether it is an acid or a base.

• True

• False

Acidic foods usually taste ________, and basic foods usually taste ________.

• sour, bitter

• sweet, salty

• spicy, bland

• umami, tangy

A substance that turns blue litmus red and reacts with metals would most likely be a(n) ________.

• acid

• base

• salt

• neutral compound

A concentrated solution of a base and water contains __________.

• a strong base

• a strong base and a weak acid

• a weak base

• either A or C

Tags

NGSS.HS-PS1-5

A neutral solution has a pH value of __________.

• 0

• 7

• 8

• 10

(True or False) A change of 1 on the pH scale indicates that a substance has either double or half the amount of hydrogen ions.

• True

• False

(True or False) A pH of 4 is more acidic than a pH of 5.

• True

• False