Chemistry Quiz 18

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.

The substance in the beaker

• is a base

• is an acid

• have neutral pH

• doesn't have pH

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3

• 7

• 9

• 5

Many cleaning solutions are bases. Which of the following is a property of most bases?

• feels slippery

• white color

• can only be liquid

• tastes sour

A sour taste is a characteristic of:

• acid

• base

• neutral

• pH scale

Most bases taste

• sour

• bitter

• spicy

The pH and pOH scales are based on the self-ionization of ________

• HCl

• H2O

• H+

• OH-

Which of the following pH values represents a solution with the highest concentration of hydronium ions?

• 5

• 7

• 9

• 11

Bronsted-Lowry acids and bases exist in pairs called __________ pairs.

• protonate

• deprotonate

• conjugate

• equivalent

Any substances that ionizes to conduct electricity in a solution is called a(n) ___________

• conductor

• ionizer

• insulator

• electrolyte

A Bronsted-Lowry acid is defined as one that is a(n) ________

• proton acceptor

• electron donor

• proton donor

• electron pair donor